单项选择题

All flights ______because of the snowstorm, many passengers could do nothing but take the train.

A．had been canceled
B．have been canceled
C．were canceled
D．having been canceled
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单项选择题
The first Olympiad is said to have consisted ______of a 200-yard foot race near the small city of Olympia.
A．nearly
B．completely
C．merely
D．identically
单项选择题
_____it left to me to decide, I would never hesitate to choose the former.
A．If
B．Were
C．Had
D．Should
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