初次见面的正式问候语是 _____________。A. Hi ! B. How do you do? C.Hello!
He has a toothache. He should see a _____.
Remember_____ the light when you leave.
- Alan, can you tell me the answer _____the question? - OK!
- Time is money. - But I think time is _____money.
- Which month has_____ days in a year? -February.