Listen! Some girls ________ songs in the classroom.A. singing B. sing C. are singing
Ifthereis______pollution,theairinourcitywillbe ________dirtier.
BythetimeIlockedthedoor,IrealizedI________mykeysathome.
—________ English movies is helpful to learn English. —But I find _______ hard to understand when the people speak fast.
—_____Ifinishmyhomeworknow? —No,you_____.Yourworkisovertoday.
Peterlikespopmusic,but______hisfather______hismotherlikesit.