_____ in the library regulations that any book borrowed be returned by due time, or the borrower will be fined.
I always think that while we are in the world,we should try .
---Do you know of them? ---No,I know nobody except Mr. and Mrs. Brown
Don’t believe what he said.His story is nothing.
---What did Tom say? ---He told me he would leave for Paris.
---How are you with your new classmates? ---We often help each other.