Ex1.1 ĐỘNG TỪ KHUYẾT THIẾU

Front

All students______wear uniforms at school because it is a rule.

Back

have to

Front

You______ finish your homework before bed.

Back

must

Front

This drink isn't good for health. You______drink it too much.

Back

ought not to

Front

Warning sign: You______step on the grass.

Back

mustn't

Front

I think you______do exercise regularly to keep your body in shape.

Back

Both B and C.

Front

I will lend you some money, but you______ pay it back to me next week.

Back

must

Front

Hoa______feed the cats; her mother has done it already.

Back

doesn't have to

Front

Audiences______show tickets before entering the concert hall.

Back

have to

Front

The children______spend too much time playing computer games.

Back

shouldn't

Front

In case of injury, you______see the doctor today.

Back

had better