The reason __________ we should learn a foreign language is very clear.
A. when
B. why
C. which
D. where
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My new glasses cost me __________ the last pair that I bought.
A. three times
B. three times larger than
C. three times as much as
D. as much three times as
The girl was fined (罚款) $20 for failing to keep her dog __________.
A. under control
B. in mind
C. in addition
D. in store
This is one of the longest bridges that __________ on this river.
A. is ever built
B. have ever been built
C. was ever built
D. has ever built
They asked so many questions that they __________ me.
A. neglected
B. wondered
C. confused
D. gained
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