单项选择题

Your brother would certainly have attended the proceedings______.

A．if he didn’t get a flat tire
B．if the flat tire hadn’t happened
C．had the tire not flattened itself
D．had he not had a flat tire
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单项选择题
The Big Ben is one of London’s best-known landmarks, and it looks most spectacular at night when the clock faces are______.
A．enlightened
B．glistened
C．illuminated
D．illustrated
单项选择题
After months of testing, the Russian space scientist______a space suit that works better than any in history.
A．came up with
B．put up with
C．ran out of
D．ran up against
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