5. The sea is polluted, which _________ sea plants and animals.
A. dangers
B. dangerous
C. dangerously
D.endangers
6. _________means “a state of being polluted”.
A.contamination
B. cleaninese
C.harm
D.threat
7. Sperm whale population is ________ risk due to hunting.
A.in
B.at
C. on
D.of
8. ________means “the movement of something around a closed system”.
A.elimimate
B.run-off
C.circulation
D.hydroelectric
9. Let’s ________to the cinema.
A.goes
B.go
C.to go
D.going
10.When they came, the meeting________.
A.start
B.started
C.had started
D.is starting
Loga
Sinh Học lớp 12
