221. There are 5 ________ in the passage about nanometer(纳米) technology we have just read. Please tell me the general meaning of the first one.
— Go and see who is making so much noise. — ____ the children.
Only through ____talks can we build trust and only through cooperation can create ____ win-win economic situation.
I really don’t know _______ I put my wallet.
There is no _______ to think more about the matter.Take it easy.
The young man,who by then _______ admission to university,decided to do some part-time jobs to gain more practical experience.