单项选择题

You （）John in the street this morning. He’s been dead for ages.

A. mustn’t see
B. mustn’t have seen
C. couldn’t see
D. couldn’t have seen

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When Carol’s son got an F on his report card, she hit the ceiling! The underlined part means ______.
A. was annoyed
B. was angry
C. was depressed
D. was worried
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Grandfather had sustained a broken back while working in the mines. ______, he spent the rest of his life in a wheelchair.
A. Consequently
B. Logically
C. Variably
D. Doubtfully
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