do it right now, and you _____ have my helpwhen in trouble.

________ three times，butshe still couldn’t follow what the old man said．

Why not talk with your parents about your willingness to attend Peking University Summer Camp?I tried __________to get them to listen to me.[ ]

I wonder why you don’t do it as ______ andit’s the third time you have done so.

It is the idea____smiles can get rid of cold ____has been proved by the researchers many times.