1 .This is a very important project, so  you_to plan it

very carefully.

A.nught H. should C.will D.must

10. You _make friends with him, because he  isn't

always friendly.

9 A our father is old, so you_look after  him.

8.People_pick flowers in the  garden.

7.Since you are not rich, you_buy expensive  things.

6.It is a bit cold,  so you_take off your sweater.

5.It is a little far from here to the zoo,  so we take a

bus there.

3. We_eat more fruit and vegetalbles to  keep healthy.

4. Children_play football in I he  street.

2.It's going to rain,so you_go  out.

根据句意用had better, had better not,  should或shouldn't 填空，使句子意思完整、通顺

1 - As students, we_be late for  class.