Don’t always play tricks ______ your classmates.
They arrived _____ Wuhan _____ a cold morning.
---- Shall we go to the Palace Museum for the National Day holiday? ---- _____! But it is too far away.
----You’d better_____ the work. You look so tired. ---- Thank you, but I have a lot of things to do.
---- Oh, there are so many bottles. All of them are full _____ water. ---- Yes,but who filled them ______ water?
After he decorated the room, he _____ very sad, because it looked ___________.