5. I wish I        (是一只小鸟) .

4. I do wish I        (能说英语) .

3. He wishes we        (加入他) the following week.

2. I wish I        (今早睡得更久些) ，but I had to get up and come to class.

1. I wish I        (和.. 取得联系) him last week.

20. Now doctors believe they have        (cure) him of the disease.

19. We must protect older people from harm,whether it is real or      (imagine) .

18. If he had spent more time practising speaking English before,he               (be) able to speak it much better now.

17. I do wish I        (know) more about the subject.

16. I should not have laughed if I        (think) you were serious.