4. 飞机应该在半小时之前到达。(suppose)

3. 我们必须采取一些措施以防止雨进入房间。(keep ...out of ...)

2. 对学生来说，学好英语是必要的。(It is+adj.+for/of sb.+to do sth.)

1. 他喝咖啡的时候，喜欢往里面加些糖。(add ...to ...)

5. If you go to Xi’an, you will find the palaces there more magnificent than

commonly 　　　　(suppose).

4. The old man used to 　　　　(drink) wine, but now he is used to (drink) beer.

3. Her first novel enjoyed an 　　　　(astonish) success.

2. It’s wise 　　　　(think) twice before you make the final decision.

1. Five 　　　　(add) to nine is fourteen.

4. That morning he came earlier than 　　　　, for it was not an 　　　　day.