Modal verbs + Subjuctive clauses

You ________stop when the traffic lights turn red.

• can

• mustn't

• have to

• must

Don’t stand up in the boat!

You …………………. fall in the river!

• may

• can

• can have

• should

It wasn’t necessary for you to do all this work.

• You needn't to do all this work.

• You don't have to do all this work.

• You can't do all this work.

• You didn't need to do all this work.

I’m sure it wasn’t Mrs. Mai you saw because she is in Boston.

• It can’t have been Mrs. Mai you saw because she is in Boston.

• It shouldn't have been Mrs. Mai you saw because she is in Boston.

• It might have been Mrs. Mai you saw because she is in Boston.

• It needn't have been Mrs. Mai you saw because she is in Boston.

Vera …………….. at the supermarket this morning. I didn’t see her there.

• mustn't have been

• couldn’t have been

• needn't have been

• couldn't been

You .............. copy in the exam.

• must

• must not

• can not

• may

They .............. speak French and English.

• need

• are able to

• can

• might

I would rather ............ at home.

• stayed

• stays

• had stayed

• stay

Your father would rather you ............... home now.

• went

• go

• had gone

• gone

You have worked hard all day; you ........... tired.

• must have been

• can be

• must be

• could have been