单项选择题
All the students finished the test()the given time.
A. at B. by C. till D. within
单项选择题 If only () the violin in the middle of the night, she'd be an ideal guest.
单项选择题 "I'm going to the theatre tonight." "So () ."
单项选择题 I used to smoke (), but I gave it up three years ago.
