-Mom , can I leave my homework for tomorrow?-I’m afraid not. Don’t _____what you can do today till tomorrow.
—How do you improve your listening skill, Mary? —I often do it _________ tapes and English radios.
I’m new at the party and I don’t have a friend ____.
The art club is for members only. You can’t go in ____ you are a member.
Jane is so shy that she is afraid of in front of a group.
I stay at home _______ on weekends, but I don’t feel ______..