The Three Gorges Dam can produce _________ for millions of people every year.
Mr Green asks us to hand in our reports ______ we finish them.
— Please ______, or you will have to get out of the reading room.— Oh, sorry.
Celia, you’d better ______ the TV now. It’s time to go to bed.Oh, Mum, the talk show will be over soon. Please give me ten more minutes.
More than ______ people visited the ______ car exhibition.
Old Tom is unhappy because ______ has visited him since he moved to town.