问题

Sometimes proper solutions are not far to seek ______ food safety problem[ ]
A: in
B: to
C: on
D: after
B: to
C: on
D: after
正确答案是:
同类题型
Do you know the ____ of your mother’s birth—Yes. It’s July 14th.
It took me two weeks________reading the novels written by Guo Jingming.
She must have seen the blind man many times , ____ she ?
I find _____ not easy to answer this question in English.
You may certainly ________ his words, for he always speaks the truth. [ ]