Download B. VOCABULARY: a. Match the following words with their correct

B. VOCABULARY:
a. Match the following words with their correct meanings:
1- boost
a. interfered with.
2-outraged
b. forget about something.
3- flop
c. failure.
4-tampered
d. raise
5- slip ( one's ) mind
e. very angry.
6-flake
f. harm.
7- Don’t sweat it
g. Don’t worry about it.
8- damage
h. irresponsible person.
9- discarded
i. rot.
10-ubiquitous
j. Examine, observe.
11-inspected.
k. found everywhere.
12-mold
l. thrown away.
C . GRAMMAR:
a. Complete the sentences with the correct Modal between brackets:
1. Did you get the package? It (was supposed to / must have) arrive by today.
2. I (must / shouldn’t) have ordered that new laptop. It was way too expensive
3. A squirrel or a rabbit (might / must ) have eaten the vegetables in our garden..
4. You look refreshed and well-rested. You (must / should ) have slept well.
b. Complete the sentences with the correct form of verb between brackets:
1. It was such a beautiful day today. We could have (go / gone) to the beach.
2. A computer error may have (causing / caused) the accident.
3. It’s too bad we didn’t know you were there. We may have (met / meet ) up..
4. A professional photographer must have (taken / take ) this picture
c. Correct the errors in the sentences:
1. Ali may has gotten lost.
2. They were supposed to arrived at 10:00.
3. His car could been stolen.
4. You shouldn’t had been so angry.
WORKSHEET UNIT 6
A. READING:
Happy Accidents
In 1928, a Scottish scientist named Alexander Fleming was researching a kind of bacteria
called staphylococcus. He conducted experiments with the bacteria in dishes. Fleming was
brilliant, but he was messy and absent-minded. When he left his laboratory to go on vacation
instead of cleaning up, he left the bacteria in the dishes. When he returned, he noticed that
mold had grown in the dishes while he was gone. He could have just thrown the dishes away.
Fortunately, instead, he looked at them under a microscope. Fleming found that the area
around the mold was free of bacteria. He realized that the dangerous bacteria must have
been dissolved by the mold. These dirty dishes led to the discovery of penicillin, the first
antibiotic. Today, this life-saving drug is used around the world. Each year there are over 80
million prescriptions written for penicillin in the U.S. alone!
The discovery of Velcro® is one such fortunate accident. One summer day in 1948, a Swiss
inventor named George de Mestral went for a hike. When he returned, he was covered in
burrs—seed-sacs that cling to clothes. Nature designed burrs to do this in order to spread
seeds to new areas. De Mestral became curious about how these burrs attached themselves
to clothes and hair. He inspected one of the burrs from his pants under a microscope. He saw
that it had countless tiny hooks that clung to the tiny loops in the fabric of his pants. This
gave him the idea to design a new kind of fastener. The fastener would be made of two
nylon strips, one side with stiff hooks like the burrs and the other side with loops like the
fabric of his pants. His invention, Velcro, has since become ubiquitous. It can be found on
everything from shoes to wallets to blood pressure cuffs to space shuttles.
a. Are the following sentences true ( T ) or False ( F ) according to the passage:
1- a Scottish scientist named Alexander Fleming discovered penicillin.
(
)
2- Fleming was brilliant, but he was well organized and absent-minded.
(
)
3- Fleming's discovery happened by accident.
(
)
4- A Swiss inventor named Spencer Silver invented Velcro.
(
)
5- The idea for Velcro came from nature.
(
)
b. Choose the correct choice to fill the spaces:
1- In __________a Scottish scientist named Alexander Fleming discovered penicillin.
a. 1928
b. 1980
c. 1948.
2- in, a Swiss inventor named George de Mestral went for a hike.
a. 1948
b. 1928
c. 1980
3- Each year there are over ____ million prescriptions written for penicillin in the U.S. alone.
a. 70
b. 80
c. 60
4- De Mestral inspected one of the burrs from his pants under a ______________.
a. microscope
b. telescope
c. magnet
5- De Mestral saw that burrs- seeds-sacs had countless tiny ___________.
a. hooks
b. nails
c. hair