Now most families have only one child _____ our country’s one-child policy.
A. since B. because C. because of
The traffic in the city _____ be terrible, but now it has improved a lot. I think you will _____ it soon.
A.get .used to; use to B. get used to; used to C. used to; get used to
I think it’s good _____ us _____ eat healthy food.
A. for ; to B. for; for C.to; for
—Tom liked playing football when he was young .
—_____, He plays it very well.
A. So he was B. So he did C. So did he
_____you have a talk with him ，you will know he is a good person .
A. Once B. unless C. Though