Front

He's got an unusual accent. He ______ foreign.

Back

must be

Front

He's had three car accidents this year, so he _______ a good driver.

Back

can't be

Front

He's just broken that car window. He ________ a thief.

Back

must be

Front

She always says horrible things about her friends so she _______ a nice person.

Back

can't be

Front

Somebody has just stolen his passport so he ________ at the police station now.

Back

must be

Front

They started playing tennis in the hot sun two hours ago. They _______ thirsty.

Back

must be

Front

This dictionary has my name in it, so it _________ yours.

Back

can't be

Front

We've only walked 200 metres. You _______ tired already.

Back

can't be

Front

They found the money and jewellery in his pockets. He ______ be the thief.

Back

Can't

Front

The sitting room window is broken. There _________ be a thief there.

Back

Might