Did your friend send you something ___ the end of last week? [ ]
Don’t copy others’ work. If you do it by, you’ll feel much better.
Hurry up, Mum. The lights are turned on. Dad has been back.—It _________ be him. He has gone to Shanghai.
Don’t _______ your hope. Everything will be better.—Thank you. I’ll try my best.
Our classroom is very clean. Do you know who__cleaned it﹖