“________ drink from a bottle and walk about at the same time．”My mother told us．

1. A.
   Not to
2. B.
   Never
3. C.
   Always
4. D.
   Often

1.. Could you please _____________me your bike? 

2. If we don’t deal with our problems, we can ___________ become unhappy.

3. Don’t _________! I’m sure we can come up with a good way.

4. The cup was used for _____________ in the old days in China.

5. We would like two _______________ of bread and some milk.