4. —Mom,must I take out the trash now?

一No,you       . You may take a rest first.

   A. mustn't   B. can’t

   C. shouldn’t   D. don't have to

3. —Talking loudly in a library is impolite.

—In fact,we should also take care not to cough or sneeze loudly in public.

   A. look after   B. be careful

   C. take care of   D. look up

2. When you run into difficulties,do remember to       .Two heads are better than one.

   A. make a decision   B. give up

   C. ask for help   D. give advice

1. “ Don’t       to strangers on your way to and from school,” mother often       to me.

   A. speak；says   B. speak；tells

   C. talk；speaks   D. talk；tells

1. 你能猜到我多大吗？

3. The air conditioner        (work) all day on a hot day.

4. Your body        (need) about two litres of water daily.

5. Who looks        ( fool) now?

1. We use rice cooker        ( cook) rice.

2. Do you have a        ( wash) machine at home?

3. There is nothing       (进行中，发生中) .

4. 1 am afraid of staying       (独自地) at home.

5. Remember to take the       (药) twice a day.

l.Our teacher is having a        (对话) with Danny.

2. We can put the vegetables in the       (冰箱) to keep them fresh.

5. 他喜欢单独出去。

He likes                    .