【推荐1】Since you have finished your work, there is no point in staying any longer; you   __________as well go home. (用适当的词填空)

【推荐2】She ________ sell her home because she needs money. (Possibility) (用适当的词填空)

【推荐3】It used to be that you ________ drive for miles here without seeing another person, but now there are houses and people everywhere. (用适当的词填空)

【推荐1】It is important to know about the cultural differences that ________ cause problems.

A．must	B．dare
C．may	D．shall

【推荐2】（1）________(have)the governments and scientists not worked together，AIDS­related deaths would not have fallen since their highest in 2005.
（2）George can't ________(go)too far.His coffee is still warm.
（3）Why didn't you tell me about your trouble last week？If you ________(tell)me，I could have helped.
（4）—Can't you stay a little longer?
—It's getting late.I really ________ go now.My daughter is home alone.
（5）It was so noisy that we ________ not hear ourselves speak.
（6）You ________ be Carol.You haven't changed a bit after all these years.
（7）You ________feel all the training a waste of time，but I'm a hundred percent sure later you'll be grateful you did it.
（8）You ________ be careful with the camera.It costs!
（9）—Sorry, Mum! I failed the job interview again.
—Oh, it's too bad.You ________ have made full preparations.
（10）I ________have worried before I came to the new school, for my   classmates here are very friendly to me.
（11）If I _______(see)it with my own eyes, I wouldn't have believed it.
（12）Without his wartime experiences, Hemingway ________(write)his   famous novel A Farewell to Arms.
（13）Ellen is a fantastic dancer.I wish I ________(dance)as well as her.
（14）I wish I _______(be)at my sister's wedding last Tuesday, but I was on a business trip in New York then.
（15）It is lucky we booked a room, or we ________(have)nowhere to stay now.

【推荐3】用适当的情态动词填空：
1. You’ve been working all day. You ______ be very tired.
2. ( The door bell rings) I wonder who that is. It _____be Lisa. She’s still in the library at this time.
3. It is a long time since we met last time. You ________come and see us more often.
4. I haven’t decided where I’ going for my holidays. I ________go to Australia.
5. My father’s birthday is coming. What_________I get him?
6. Why don’t you try on this dress? It ____________look nice on you.
7. “who was the man talking with your teacher?” “I’m not sure. I _____be her brother.”
8. I don’t know when the guests______________be here. They_________arrive at any time.