问题
Did your friend send you something ___ the end of last week? [ ]
A: at
B: by
C: in
D:to
B: by
C: in
D:to
正确答案是：
同类题型
I bet Mrs. Black will come to help us with the celebration if she ______ too busy tomorrow. [ ]
Most girls like to sleep with the lights on, because they are ________ the dark.
Could you help me change the wheel，sir?—______，madam，which one?
When I got to school, Amy ______his homework.
Do we look the same?—Yes．There are no differences between _________．