The streets are all wet. It______ during the night.A.must be rainingB.must have been rainC
The streets are all wet. It______ during the night.
A.must be raining
B.must have been rain
C.had to rain
D.must have rained
The streets are all wet. It______ during the night.
A.must be raining
B.must have been rain
C.had to rain
D.must have rained
A) must not have attended B) could not be able to attend
C) may have attended D) mustn't attend
B. The paper must have been blown away.
C. The man should look around for it under the desk.
D. The man can buy another one at the corner.
B.would have arrived
C.should arrive
D.must have arrived
A.wound
B.injure
C.damage
D.hurting
A、(I) is true, (II) false.
B、(I) is false, (II) true.
C、Both are true.
D、Both are false.
A、carbon steel
B、alloy steel
C、cast iron
D、tool carbon steel
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