—It’s important ________ us _______ learn English well.—I agree with you. We should try our best to learn it.A. to, to B. to, for C. for, to
So far _____ people have visited the old city in Zhejiang.
---Have you ever _____ the Great Wall? ---Yes, I have.
---_____ riding your bike to the park? ---Good idea.
Liu Sanzi is _____ eight-year-old boy from village.
—Could you post the letter for me? —_______________