Modal Verbs Test in Grammar Test

1. I don't know where to go next summer. I ____________ go to London.

have to

should

must

may

We use the modal verb 'may' when it is possible that something will happen.

1. My car is too dirty. I ______________ clean it immediately.

might

can

must

may

We use the modal verb 'must' when we talk about duties or when it is necessary to do something.

1. He is a good sportsman, but he ______________ stop smoking.

may

can

might

should

We use the modal verb 'should' when we give advice or recommend something.

1. It's very cold outside. We __________ put on warm clothes.

can

could

may

have to

We use the modal verb 'have to' when it is not our idea to do something, when we are forced to do something by somebody or by circumstances.