Your son is old enough to __________himself.
Don’t eat________ snacks because there’s ________ sugar in them.
--I’m going to Yuannan next week. --Great!________.
Boys and girls usually _____ and play tricks on each other on that day.
−If you are free this evening, how about having dinner together? −______________.
−Can I __________ the book from you? −Sure. But you can’t _____________ it to others.