When asked about his happiness, Baoqiang said that if he could afford _________ house, he would feel he was really _________ success.
---Shall we go to the station on foot? ---_______.
_______ you get on well with a number of people, you are usually friends with only a few .
---- It’s the office! So you _____ know eating is not allowed here. ---- Oh, sorry.
You should write a _____________ composition every other week.
Although _______ my opinion, the old professor didn’t come up with his own.