White-collar workers in China are willing to postpone their retirement age ______ blue-collar workers prefer to retire early.
.Who is making so much noise in the garden? __ the children.
---Shall we go swimming? ---Ok, I’ll just go and get .
.—Is there anyone who is gong the Great Wall? _______
With all the magazine he needed ,he left the library.
Andeison entered the classroom, ____book in ___hand.