1 . Sometimes smiles around the world ________ be false, hiding other feelings like anger, fear or worry. (用适当的情态动词填空)

2 . It   ________   be the vocabulary that caused you the problem in the exercise because you know a lot of words. (用适当的情态动词填空)

3 . Dark thoughts about your physical appearance can hang over you all the time like a rain cloud. (英译汉)

4 . 选词填空
1. —Must I finish the task right now?
—No，you ________ (don’t have to/mustn’t)
2. It’s so near. We ________ have taken a taxi.(shouldn’t/can’t)
3. You ________ have spent so much time playing computer games.(mustn’t/oughtn’t to)
4. ―Shall I leave the room so that you two can talk?
―No, you ________.(mustn’t/needn’t)
5. He ________ have missed the train; he arrived atthe train station two hours earlier.(can’t/mustn’t)
6. You ________ start at once if you want to catch the bus.(have to/ought to)
7. They ________ stay in the office last night because of the snowstorm.(had to/must)
8. We _______ have helped him; in that case, he would have been able to finish the work.(should/can)
9. He finished all the work himself; in fact, he ________ have asked his friends for help.(need/could)
10. Something terrible ________ have happened if Li Chang was not coming to eat in his restaurant as he always did.(have to/must)

5 . It ________ be quite hot here even in the deep autumn. (Possibility) (用适当的词填空)

6 . It ________ be Jack over there. He just phoned me from home. (Possibility) (用适当的词填空)

7 . Michael ________________ (不可能是一个警察), for he is much too stupid. (根据汉语提示完成句子)

8 . Mike ________________(一定还没有修好他的车), for he came to work by bus this morning. (根据汉语提示完成句子)

9 . I can’t find them anywhere. Where ________________(他们可能到什么地方去了呢)?(根据汉语提示完成句子)

10 . Jane’s light is on. She ________________(一定在家). She ________________(不可能出去). (根据汉语提示完成句子)