I’m going on a trip to Beijing. —_________!

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.

I hear they’ve ____ Tom because of hisperformance, which he didn’t mention when we talked on the phone.

Where _____ your pen pal _____

I must be off now "she said,and______ that she hung up the phone