Air quality in our city is becoming worse and worse.—Yes. These days’ PM2.5 readings are frightening. We must do something to ______air pollution.

______ do you like the trip to Wuhan?－It’s wonderful.

He ____ if you ____ him tomorrow. [ ]

Football Weekly ______every week. It provides a lot of information on football for us.

It’s ___________ black．It’s ________ black ruler．