题目内容

We ______ to the zoo yesterday.

A. have been
B. go
C. went
D. will go

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I ______ to China in 1999.

A. went
B. go
C. gone
D. goes

She never snow.

A. has; saw
B. has; seen
C. did; see
D. have; seen

We ______ English for many years.

A. did learn
B. were learning
C. have learned
D. learn

He ______ the exam last year.

A. fails
B. fail
C. failed
D. is failing