He ___ to Beijing. I saw him only a while ago.
A.cannot have gone
B.might not have gone
C.couldn't go
D.must not have gone
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He ___ die of hunger than beg in the street.
A.had better
B.prefers
C.might as well
D.would rather
He is so ___ in his work that it would be a pity to disturb him.
A.absorbed
B.attentive
C.consumed
D.intent
In order to be successful as an engineer, she had to become ___ at mathematics.
A.proficient
B.outstanding
C.prominent
D.experienced
Not until the meeting had begun ___ to the meeting room on the top floor.
A.had he got
B.would he have got
C.did he get
D.should he have got
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