A.To turn off the computer.B.To watch the girl use the computer.

C.To teach the boy how to use the computer.D.To buy a computer with the boy.

A.They are doing maths problems.B.They are counting numbers.

C.They are reading numbers.D.They are talking about numbers..

A.Nine years.B.Nine months.C.Nineteen months.D.Nineteen years.

A.whileB.asC.sinceD.when

A.what to deal withB.how to solveC.how to deal withD.how to do

—Take it easy. But our teacher often tells us we can’t be ______ careful while taking exams.

A.veryB.tooC.quiteD.so

--- _______. We often have diifferent opinions.

A.does; YesB.doesn’t Yes

C.does; NoD.doesn’t; No

A.that; helpfulB.that; helpC.whether; helpfulD.if; help

A.informationB.newsC.suggestionD.advice

A.both; andB.not only; but alsoC.either; orD.neither; nor