1 . 他现在能骑自行车了, 但几星期前他不会。 (用情态动词完成句子)
He can ride a bike now, but________________.

2 . 我想了又想,   但我记不起我在哪里买的词典。(用情态动词完成句子)
I have searched my memory, but I ________________ where I have bought the dictionary.

3 . 选词填空。
1. He ________(must/might) get here in time ,but I can’t be sure.
2. He ________(can’t/mustn’t) have missed the train; he arrrived at the train station two hours early.
3. That must be a mistake. No, it ________(can’t/mustn’t) be a mistake.
4. Paul did a great job in the speech contest. He ________(must/can) have practised many times last week.
5. He ________(may/must) be at his office now, but you’d better make a phone to make sure.
6. Look, someone’s in the room. Who ________(can/must) it be ?
7. It ________(must have /may have) rained last night, for the ground is still wet.
8. I don’t know where she is, she ________(may/must) be in Wuhan.
9. With drones’ ability to see ahead, they ________(could/should ) signal any problem, so that fast -moving trains would be able to react in time.
10. I ________(needn’t/can’t) have bought so much wine -only two people came.

4 . 为了帮助你更好地学习，听一点莫扎特的音乐可能会让你记忆力更好。（汉译英）

5 . 这是一份你能从中学到一些东西的工作。
This is a job ________ something.

6 . 用can或must填空
1. My phone ________have been stolen while I was taking a bus. I can't find it anywhere.
2. I'm hungry. I ________eat two bowls of rice now.
3. You not ________touch other people's head in this country as it will, according to local people, bring had luck to both of you.
4. —Why________ you stay in the countryside where it's not convenient to go shopping?
—Because I've found it beneficial to my health.
5. As far as I am concerned, the air crash ________not have been caused by a bomb attack.
6. You________ not be tired—you've only been working for ten minutes.
7. It is usually warm in my hometown in March, but it________ be rather cold sometimes.
8. Many rare animals are dying out. We________ find ways to protect our environment.

7 . It’s hard to resist the delicious taste of Gong Bao Chicken. _____ (可以) I learn from you how to cook it?（根据汉语提示单词拼写）

8 . We had to be careful not to be out too often, ________.
我们要小心不能经常出去因为变化的气温会让我们生病。

9 . 一星期40英镑，我无法维持生活。
I ______ ______ ______ ￡40 a week.

10 . 一个人究竟怎样才能完成这样一个伟大的工程呢？（How）（汉译英）