A professor from _______university said that he would think out _______unusual way to face the serious problem .
| A．a ; the | B．an ;a | C．a ; an | D．an ;the |
---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 onto 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 |