二轮资源简介:
Exercises:
1.Selecting a mobile phone for personal use is no easy task because technology _____ so rapidly.
A. is changing B. has changed C. will have changed D. will change
2. I wonder why Jenny ____ us recently. We should have heard from her by now.
A. hasn’t written B. doesn’t write C. won’t write D. hadn’t written
3. –Excuse me, sir. Would you do me a favor?
--Of course. What is it?
--I ____ if you could tell me how to fill out this form.
A. had wondered B. was wondering C. would wonder D. did wonder
4. ---____David and Vicky ____ married?
---For about three years.
A. How long were; being B. How long have; got
C. How long have; been D. How long did; get
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