My sister is on holiday in Hainan. —I wonder ____.

Are Mr. and Mrs. Wang living alone in the house? —-Yes, altough they have three sons, of them live with their parents.

The young lady________ is talking with our teacher comes from America.

. ______ is no possibility _____ Jack will win the first place in the competition.

Can I use your bike this afternoon?_______ is under repair.－No problem. Here’s the key.