— I’m tired after that long class.— Well, you can ________ for ten minutes(分钟).

— 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.

The shop ________from 9 a.m. to 9 p.m. But it ________at 8 pm. on Sundays.

If we         now to protect the environment, we’ll live to regret it.

--     ! What`s that ? – I can`t        it .