- Susan, go and join your sister in cleaning the yard.- Why______ ? John is sitting there doing nothing at all.
---How about going to the park together? ---________
—Excuse me, ____ is it from our school to Huanglong Stadium? —About ____ drive.
––David has made much progress in Chinese this year. ––____. He has reached a level which is quite good.
He found ____ very difficult _____ the problem.
—Which sweater can you choose, the blue one or the red one? —____ is OK, I think. Both go well with my trousers.