Plan your activities so that you are rested and refreshed when something important ______.

Excuse me, when ________ you ________ the man in blue—Last year. And I ________ him for one year.

l transplants are no longer sciencefiction imagination ,”a surgeon has said,____that they are ___possiblebut technically complex

The problem is too difficult，can you show me _____，WangLe—Sure.

I don’t know _______.