問題詳情：
用括號內所給動詞的適當形式填空，必要時可加助動詞或情態動詞。
1. The telephone ____________ (invent) by Bell in 1876.
2. Teenagers should be allowed _____________ (choose) their own clothes.
3. I practice my listening by _____________ (listen) to the tape over and over again.
4. Could you please tell me where I can get something ___________ (eat)?
5. Look! He must ______________ (run) to catch a bus.
【回答】
1. was invented 2. to choose 3. listening 4. to eat 5. be running
知識點：語法填空
題型：完成句子
