20. Everyone is busy working. You can’t stay here you keep quiet.
A. if B. when C. once D. unless
19. This is the only one of the books we need.
A. that B. which C. what D. all
18. Things are on the moon on the earth.
A. as heavy; as B. not so light; as
C. heavier; than D. much lighter; than
17. The police the man to see if he had a gun.
A. searched B. looked for C. found out D. searched for
16. Many satellites have been sent into space.
A. for B. out C. off D. up
15. The fire was getting stronger and stronger and it seemed to .
A. lose control B. be under control C. be out of control D. be controlled
14. There are too many people in the house. There isn’t enough for us all.
A. rooms B. space C. floor D. ground
13. Let’s do listening first. Listen carefully, please.
A. practicing B. practice C. example D. work
12. There are people the street.
A. too much; on B. too much; in C. too many; in D. too many; at
11. Could you tell me what you have mind? I think I can give you some advice it.
A. at; about B. in; on C. in; of D. on; on
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