—I want to know ________ I can take the No. 101 bus because I need to visit my sick friend in Ganzhou.—Across from the bookstore.
Your father works late, _____ ?
He __________ the book for ten years.
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.