Mr. Zhang got up very early ________he could catch the early bus .
I failed in the final exams last term and only then________the importance of study.
It’s important for teenagers________time with friends.
Mr Li is very strict________his students and he is also strict________his work.
—I think the poor health will get________of your study.
—Don’t________too late,or you will feel tired in class tomorrow.—I won’t,Mom.