问题
Losing weight is no easy task. A lot of people who lost weight gain it back over time and end up back _______ they started.
A:where
B:though
C:since
D:after
B:though
C:since
D:after
正确答案是：
同类题型
(2008·山东，26)Occasions are quite rare ________ I have the time to spend a day with my kids
______ leaves the room last ought to make sure that the windows are closed and the door locked.
You must _______ your teacher for it.
Does he know how to work out the problem ?—Yes , he has a good idea to solve it .