----Don’t you think ______ is necessary for friends to trust each other?----Yes, it’s the most important.
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.