【推荐1】用适当的情态动词填空
1. You ________ go now.You ________ finish it today.You have been working for more than eight hours.You ________ be very tired.You ________ go home now and have a good sleep.
2. Mary ________ be in the classroom.I saw her on the playground just now.You ________ have made a mistake.That girl ________ be Jenny.
3. —________ I use your bicycle?
—Certainly，you ________．But it ________ be returned before six o'clock this afternoon.
4. —________ you go and travel there with me next week?
—I’d like to.But I ________．I have a lot of things to do then.________ we go next month?
—Well，see you!
5. You ________ play basketball here.I ________ have told you about it earlier.You ________ ask for permission if you ________ like to.

【推荐2】语法专练（用情态动词的适当形式填空）
1. In today’s information age, the loss of data ______ cause serious problems for a company.
2. We ______ call Tim before we visit his house; he ______ not be at home.
3. If you ______ smoke, please go outside.
4. A: I’ve got a bad headache.
B: Why don’t you go and lie down?
A: Yes, I think I will. ______ you bring me some aspirin?
B: Yes, of course I can. ______ I call the doctor?
A: No. Let’s wait and see how I feel later.
B: ______ you like a glass of water?
5. No one ______ be more generous than he; he has a heart of gold.
6. — You needn’t take an umbrella. It isn’t going to rain.
— Well, I don’t know. It ______ do.
7. It ______ be the vocabulary that caused you the problem in the exercise because you know a lot of words.
8. From the experiment, we can know that fish ______ die out of water.
9. When I passed my school, I ______ visit my teachers who once taught me.
10. Let’s go for a walk after supper, ______ we?

【推荐3】If you ________help us，we shall be very grateful. （用适当的词填空）