—Were you at home at 9:00 last night? I called you but nobody answered.
—Sorry, I ________ at that time.
| A．take a shower | B．took a shower |
| C．was taking a shower | D．am taking a shower |
---Jack, I'd like to have your opinions about my report.
---________.But I have one suggestion.
| A．That's a good idea | B．I agree with you |
| C．It looks fine to me | D．Check it first |
Mike used to be a top student, but he______ behind since he lost himself in computer games.
| A．fell | B．has fallen |
| C．was | D．has been |
---Jenny，will you leave for the USA now?
---No. It will be two weeks________I leave here.
| A．until | B．since | C．before | D．when |
Life is a journey with trouble, but with care and wisdom you can_____any problem you face.
| A．work out | B．hand out |
| C．find out | D．put out |
---Could you tell me the_______of making such tasty cakes?
---Well，I just follow the instructions in the cookbook.
| A．time | B．method | C．cost | D．menu |