．— do you do some cleaning?
— Three times a week.
A.How long B. How often C. How many D. How far
foreign(外国) friends come to visit China every year.
A. Two thousands B. Thousands of
C. Thousand of D. Two thousands of
— Do you often help your brother with his English?
— No. He learns English by .
A. himself B. yourself C. herself D. myself
Mike prefers to .
A. to swim; running B. swimming; running
C. to swim; run D. swimming; run
We brush our teeth twice a day.
A. may B. can C. should D.shouldn’t
Xu Xia and her teammates are _______ the USA next week.
A. leaving for B. leave for C. leave D. Left
