题目内容
17．You ______ wash your car at the moment．It's going to rain．（ ）| A． | needn't | B． | mustn't | C． | shouldn't | D． | can't |
分析 现在你没必要洗车．天要下雨了．
解答 答案：A．needn't不必；mustn't不可以；shouldn't不应该；can't不可能．根据It's going to rain，可知天要下雨了，所以没必要洗车．needn't不必．故选A．
点评 本题考查了情态动词的用法．熟知句意以及所给选项的意思是解答本题的关键．
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3．-Must I send the e-mail at once？
-No，you _______．You can do it after class．（ ）
-No，you _______．You can do it after class．（ ）
| A． | can't | B． | mustn't | C． | needn't | D． | shouldn't |
5．
If you go into the forests with friends，stay with them．If you don't，you may get lost．If you do get lost，this is what you should do．
Sit down and stay where you are．Don't try to find your friends．Let them find you．You can help them to find you by staying in one place．
There is another way to help your friends or other people to find you．Give them a signal（ 信号 ）by shouting or whistling（吹口哨） three times．Stop．Then shout and whistle three times again．And signal given thee times is a call for help，
If you don't think that you will get help before night comes，try to make a small room with branches（ 树枝 ）．
What should you do if you get hungry or need to drink water？You would have to leave your little branch room to look for something to eat and drink．Don't just walk away．Drop small branches as you walk so that you can find your way hack．
The important thing to do when you are lost--stay in one place．
If you go into the forests with friends，stay with them．If you don't，you may get lost．If you do get lost，this is what you should do．Sit down and stay where you are．Don't try to find your friends．Let them find you．You can help them to find you by staying in one place．
There is another way to help your friends or other people to find you．Give them a signal（ 信号 ）by shouting or whistling（吹口哨） three times．Stop．Then shout and whistle three times again．And signal given thee times is a call for help，
If you don't think that you will get help before night comes，try to make a small room with branches（ 树枝 ）．
What should you do if you get hungry or need to drink water？You would have to leave your little branch room to look for something to eat and drink．Don't just walk away．Drop small branches as you walk so that you can find your way hack．
The important thing to do when you are lost--stay in one place．
| Title | How lo deal with getting lost |
Ways | ①（66）Sit downand stay where you are ②Give friends（67）a signalby shouting and whistling three times ③If you don't get help before night comes，try to（68）makea room with branches ④Drop some small（69）branchesas you walk so that you can find your way back． |
| Conclusion | There are many ways to deal with getting lost，but the most important Way is to stay in（70）oneplace． |
12．_______ careful you are，________ mistakes you will make．（ ）
| A． | The more，the more | B． | The less，the fewer | ||
| C． | The more，the fewer | D． | The less，the fewer |