No one ______ this building without the permission of the police . A is leaving B is to leave C has left D will be leaving
—John,when shall we meet again,Thursday or Friday?— .I'll be off to London then.
What an unforgettable experience! I'll write it down it is still fresh in my memory.
—Do you think I should accept his invitation,Jim?— .If I were you.I certainly would.
He called to tell me that you are in hospital, otherwise I ______ nothing about it.
Living in the mountain area has its problems , _____ obtaining water is a big problem.