---Must I water the flowers right now?---No, you ________ . You may do it after supper.A. mustn't B. needn't C. can't
—What were you doing at 8 o’clock this morning? —____.
If you don’t study hard before the exam, you will probably ____it.
____you study, ____grade you will get.
—I think there ____more students in our school next term. —Well, I think so.
—Why is your father ____your chatting on QQ? —Because he thinks I should spend more time on study.