1 . 听起来好像某人正在敲门。
It _______________someone is knocking at the door.

3 . 因为粗心大意，他错误地将糖加入汤中，结果味道却非常好。(due, mistaken, turn)
_______, he ________ but ___________ the taste was very good.

4 . 没必要为那件事烦恼。我相信一切都会好起来的。
________ upset about that. I’m sure everything will turn out all right.

5 . The scheme ______________________.
该计划结果很成功。

6 . 快点!看起来火车要开了。
Hurry up!It ________the train is going to move.

7 . 门仍然锁着。
The door________.

9 . 用系动词翻译句子
1. How he managed to get out of the house without being seen ____________________（对我们来说仍是一个谜）.
2. ____________________（那位老人睡着了）when he was watching TV alone.
3. His wish to ____________________（成为一名科学家）one day ____________________（终于实现了）.
4. ____________________（她尽量显得镇定）even when she felt worried inside.
5. ____________________（树上的叶子变绿了）when spring comes, which makes a beautiful scene.

10 . He noted that a dish in which he was trying to grow bacteria for an experiment ________(看起来有些异常)—there was blue mound in it.