You ______ buy a gift, but you can if you want to.

单项选择题______ before you leave the lab.

单项选择题I was impressed______the efficiency of the work done in the company.

单项选择题The idea came to me when I ______ with him.

单项选择题—Is Blake still absent from class —I think he______be punished if he goes on with it.

单项选择题The reason why the traffic was stopped was the bridge ______ was broken.

单项选择题—I'm sorry I didn't make it to your party last night. — ______. I know you're busy these days.

单项选择题—My mother is preparing my favorite dishes. Go with me and have a taste, okay —______. And I'll be glad to meet your parents.

单项选择题I haven't seen Sara since she was a little girl, and she has changed beyond（）

A. hearing
B. strength
C. recognition
D. measure

单项选择题Listening to loud music at rock concerts caused hearing loss in some teenagers.

单项选择题义务教育阶段的英语课程具有______和______双重性质。