---A: Sorry, I didn’t return your book on time.
---B: _______.
A. I agree with you. B. It doesn’t matter.
C. You’re welcome. D. That’s a good idea.
---A: Sophia, your handwriting is really beautiful. I love it.
---B: _______.
A. I practise it every day. B. No, I don’t think so.
C. Thank you very much. D. Well, it’s not good enough.
---I called you at 4:00 yesterday afternoon, but nobody answered.
---Sorry, I ______ with my friends at that time.
A. had swum B. swam
C. would swim D. was swimming
The WHO has given some advice on to prevent us being infected(感染)with H7N9.
A. how B. what C. where D. when
When the parents arrived at the hall, the students _______ their projects.
A. have finish B. had finished
C. finished D. are finishing
Tom Sawyer let his friends _______ a long fence by playing a trick one afternoon.
A. paint B. to paint C. painting D. to painting
