MODAL VERBS (ĐỘNG TỪ KHIẾM KHUYẾT)

Front

Peter wasn’t here then, so he_____have broken your vase.

Back

can’t

Front

This homework isn't as good as usual. You ________ have spent more time on it.

Back

should

Front

The children _____ “thank you” when you gave them gifts.

Back

should have said

Front

This box isn't as heavy as it looks. You _________ help me with it. Thanks anyway for offering to help.

Back

needn't

Front

You ______ drink this; it's poison.

Back

mustn't

Front

Young people _________ obey their parents.

Back

must

Front

I'm feeling very tired this morning. I __________ have stayed up late last night.

Back

shouldn't

Front

The swimmer was very tired, but he________the shore before he collapsed.

Back

was able to reach

Front

You don't look well. You ________ see a doctor.

Back

should

Front

When my father was young he________work in the garden for long hours

Back

could