American Headway 4 _ Unit 10

Write sentences. Use have + past participle.

The iceman/ can't/ be/ too tall.

Write sentences. Use have + past participle.

She/ must/ be/ a difficult child.

Write sentences. use have+ past participle.

He/ could/ build/ tree house

Write sentences. Use have + past participle.

You/ might/ warn me/ she would be there!

They might have died in the cold.

• certain.

• possible

They can't have gone home. No one can walk or drive in this weather.

• certain

• possible

Well, they're not here. They could have spent the night on the mountain.

• certain

• possible

There's so much snow. It must have been cold on the mountain.

• certain

• possible

We were lucky to leave at 2:30. we ... have been stuck in that traffic.

• must

• could

• should

We ... have worried. He was safe at home.

• shouldn't

• couldn't

• might