You should keep _______ in the reading room.
I don't know if he tomorrow.If he ,please tell me
If you don’t know how to spell a new word, you’d better in a dictionary.
He was so when he heard the news that he got the first prize in the contest.
Could you tell me the nearest hospital is? what B.how C.whether D.where
Could you please tell me ________? I want to send two letters to my friends.