There was thick haze（雾霾）in our city this spring. What do you think of it—I think __ cars we drive, __ pollution our city will have.

Great attention must be paid ______ education, especially in the countryside[ ]

Let’s watch a volleyball game in Beilun.—________.

Sometimes ______ English is quite different from ______ English in many ways.[ ]

Before he went abroad，hespent as much time as he _____ English.