By the time you get back, great changes______in this area.
A. will take place
B. will be taken place
C. will be taking place
D. will have taken place
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By the time you______, I______all my housework.
A. returned; will have finished
B. return; will finish
C. return; will have finished
D. returned; finished
When I______the letter, I______it to you.
A. wrote; will show
B. wrote; would show
C. have written; will show
D. have written; would show
I______New York in 1986, but I______there ever since.
A. visit; hadn’t been
B. visited; haven’t been
C. visit; haven’t been
D. visited; hadn’t been
I think by five o’clock the children______from their work.
A. will return
B. had returned
C. will have returned
D. have returned
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