1、单元练习题（一）用所给动词的适当形式填空：discuss taste comfortable live fashion walk enjoy help possible do1. His speech cause much _at the meeting.2. Food will not be as _as it is today.3. I am very _lying in this hard, cold floor.4. I can hardly image _on Mars. 5. Mary thought it was _to go to Bermuda for holidays.6.
2、 _on the moon is fun.7. The journey to Mars will be very_.8. By _them, we are helping to save ourselves.9. You cant _walk twenty miles in an hour.10. It is great to have robots _all the work for us.选用 whether 或 if 填空1. I dont know _or not he will help us.2. I dont know _he will come tomorrow. _he comes, Ill tell you. 3. He worried about _he could pass the exam.4. We cant decide _to go to the farthest island.5. He said that _he had time he would come to see us.
