Strangely enough, some books ________ for children have become popular among adults!
When I woke up, I found myself ______ in bed and ______ by doctors and nurses.
— What does the sign over there say?— No person ______ enter the area without the official permission.
It’s the protection for the trees ______ really matters, ______ how many trees are planted each year.
I like this 3G cellphone very much, but it costs almost _______that one.
____ surprised me most was to see so many women crying sadly there.