________do you sleep every day?— For about ten hours. [ ]

Must I hand in my exercise book now, Mr. Zhao?—No, you ______. You may give it to me tomorrow.

Can you understand my words? — Sorry, I can ______ follow you.

I need five Yuan to ______ for summer camp.

Wow, so many new houses! I can’t believe that. It used to be a poor village. — Yes,_________ has changed here.