The problem children often get into trouble ____ teachers.
| A．on | B．at | C．in | D．with |
I think the price of house in Guang’an is _____than it in Nanchong.
A. higher B. more higher C. most high
My sister ____two hours doing her homework every day.
A. takes B. spends C. costs
Jim runs very fast. He plans to ____the boys’400—metre race.
A. follow B. take C. enter
.It’s ___cold outside. Put on more clothes when you go out.
A. a bit B. a bit of C. a few
Teachers often ask us ______ on the road after school.
A. play B. not play C. not to play