--- What are your plans for the coming weekend?
--- I have to ______________ at home. You know there will be an important exam next week.
| A．look after my sister | B．go over my lessons |
| C．help with the housework | D．turn on the radio |
Mrs. Smith has _____ son and a daughter.
A. a B. an C. the
Bob is _________ than John.
A. tall B. taller C. tallest
—What are _______ teachers doing?
—They are having a meeting.
A. this B. that C. those
There are a lot _____ students on the playground.
A. of B. in C. by
My mother asked me _____ the room.
A. clean B. cleans C. to clean