8. People prefer (chat) online to writing letters.

7. — Where is your mother, Jack?

—Maybe she (prepare) dinner in the kitchen.

6. A thin man ( notice) to enter the room half an hour ago.

5. Fm not familiar with this place. It's the first time I (be) here.

4. He will give us a report as soon as he (arrive) .

3. That is the only way I can think of (prove) what I said is true.

2. The students (discuss) the spring trip when Miss Li came in.

—Don’t worry. I (get) it for you in a minute.

() 13. The performance was very exciting and the audience raised a shout of joy.

   A. every time   B. from time to time

   C. at all times   D. at the same time