4. 我剛剛吃了你的食物，因為我很餓。

() 5. Have you heard that the research he devoted himself great success?

   A. to being a   B. to was a   C. to be   D. to was

() 5. I go to school every day. It’s not very far from my home.

   A. in a bus   B. in underground   C. by a bike   D. on foot

5. The college students will face a difficult (形勢，情況) when they graduate (畢業(yè)) .

三、動詞填空

1. Do you hear it? Someone (ring) the doorbell.

8. It's necessary for us (realize) the importance of environment protection.

8. —Is this your , Mary? - Yes. We got married last year.

2. We began to study here about two years ago.(改為同義句)

 We here about two years ago.