It’s silly you your car at such a low price．
A． for; to sell B． of; to sell
C． for; sell D． of; sell
Do you think _________ should be allowed to drive?
A． sixteen-year-old B． seventeen-year-olds
C． fifteen-year-old D． eighteen-years-olds
Swimming is good _____ our health, but at the same time we mustn’t forget the danger．
A． for B． at
C． on D． with
－I think teenagers should not be allowed to get car licenses．
－I agree．They are not _______．
A． serious enough B． something serious
C． nothing serious D． enough serious
---I think students should be allowed ___ homework with friends．
---I disagree．They talk instead of ________ homework．
A． do, doing B． to do, to do
C． to do, doing D． doing, to do
Health is very _____and every student knows the _____of keeping healthy.
A． important ; importance B． important ; important
C． importance ; importance D． importance ; important
