I have two sisters. One is a doctor, _______ is a teacher.

___ is believed ___ more and more people would fly to the moon in the future.

Don’t you think learning English wastes much time?— ____. You haven’t got a proper method, I suppose.

His passport shows that he________Canada. — Yes. He went there on business in spring and autumn last year.

I was asked to attend the meeting before eight.—Oh, you________. I’m sorry for not telling you that we have changed the plan.