His close friend _____ for two years.
When the bell rings, we all go to the classroom to have class.A. stops workingB. makes a soundC. cries for help
I would like to be your penfriend.A. want B. like C. hate
Many factories poured out dirty water and polluted the Pearl River.A. made ... cleanB. made ... fullC. made ... dirty
Timmy is good at designing 3D computer games.A. does well inB. learns aboutC. enjoys
They enjoy themselves at school every day.A. are not happyB. have a good timeC. are busy