Question

【题目】Is Mr. Smith in his office now?
No, he there. I saw him in the library a minute ago.
A.may be
B.must be
C.can't be
D.won't be

Answer 1

【答案】C
【解析】句意：--- Mr.Smith现在在办公室吗？---不，他不可能在那儿。A.may be 也许在；B.must be一定在；C.can’t be不可能在；D. won’t be将不在。据Isaw him in the library a minute ago.，故选C。