--You ___________to be here an hour ago, but you’ve just arrived.-- Oh, I’m sorry for that.
Don't go out ___ the rain stops. Otherwise, you'll get wet!
The librarian told me that I could ___ these magazines for three days.
___ great fun we had in Yandu Park last Sunday!
This photo reminded the old man ___ the days when he was young.
I don’t know ______. A.where she comes from B.how old is she C.when was she born