Noise pollution was a serious problem here .
A．in the past B．in the future C．since then D．once a week
These kinds of vegetables only in that shop over there. They_____ well.
A．are sold; are sold B．sell; sell C．sell; are sold D．are sold; sell
Learning English will us a lot of time.
A．take B．spend C．cost D．pay
--- Where is your brother, Leo?
--- He is in Hainan on vacation. He for two weeks.
A．has gone B．has left C．has been away D．left
The students be in the classroom because there are lights in it.
A．can B．must C．can’t D．mustn’t
There a lot of farmland here. But now you can only see tall buildings.
A．used to have B．is used to being
C．used to having D．used to be
