.
His sister left home in 1998, and ______ since.
| A．had not been heard of | B．has not been heard of |
| C．had not heard of | D．has not heard of |
32. —Look at the black clouds. It ________ soon.
—Sure. If only we ________ out.
| A．is raining; didn't come |
| B．is to rain; won't start |
| C．will rain; haven't started |
| D．is going to rain; hadn't come |
I. 选择填空（Multiple-choice）（共15小题；每小题1分，计15分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。(Beneath each of the following sentences there are four choices marked A, B, C and D. Choose the answer that best completes the sentence.)
31. Alice is fond of playing ________ piano while Harry is interested in listening to ________ music.
A. /; the B. /; a C. the; / D. the; a
The girl was so happy to find ______ in the garden.
| A．a variety of flowers | B．a variety of flower |
| C．varieties of flower | D．variety of flowers |
It’s obvious that his ______ to the problem is wrong, so we’d better try another way to solve it.
| A．way | B．means | C．approach | D．intention |
Peter phoned to say they had arrived safely, so put your mind ______.
| A．with ease | B．by heart | C．in peace | D．at ease |