单项选择题

We have done things we ought not to have done and ______ undone things we ought to have done.

A. leave
B. leaving
C. left

D. will leave
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单项选择题
He often sat in a small bar drinking considerably more than
A. he was in good health

B. his good health was
C. was good for his health

D. his health was good
单项选择题
My train arrives in New York at eight o’clock. The plane I would like to take from there ______ by then.
A. would leave


B. will have left
C. has left


D. had left
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