单项选择题

______ there was an epidemic approaching, Mr. smith ______ the invitation to visit that area.

A．If he knew, would have declined
B．If he had known, would decline
C．Had he known, would decline
D．Had he known, would have declined
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单项选择题
By the end of the year 2004, he ______ in the army for 40 years.
A．will have served
B．will serve
C．will be serving
D．will be served
单项选择题
British hopes of a gold medal in the Olympic Games suffered ______ yesterday, when Hunter failed to qualify during the preliminary heats.
A．a sharp set-back
B．severe set-back
C．a severe blown-up
D．sharp blown-up
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