Is there anyone here name isBetty? —- Sorry, I don’t know.

The taxis in this city ________ in the same color. You can see them every day.

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.

Mum is coming. What present _______ for your birthday?

Tommy, _________ do you play the piano?—When my mom is at home, I have to every day, but she’s away this week!