—Dad! I hate studying, and I want to drop out of school.—Quit halfway? ________. Oh, sorry, I didn’t mean to be rude.
—Who ________ it be that is knocking at the door?—It________ be Mother, but I’m not sure.
If you cheat in the exam, you could hardly________ it.
He once studied in Zhejiang University, ________he went abroad for further study.
More attention should be paid __________ English.
More than 60 million people in southwestern China ________the drought nowadays as a result of less rainfall, environmental damage and so on