He is a ____, and he works in Beijing Hospital.A. manager B. policeman C. doctor
---Daniel, your books are in a terrible mess on your desk. ---Really sorry. I’ll at once.
Mr. Li is not here, and you’d better call him ____3 p.m. ____ 5 p.m. tomorrow.
There are quite a few old books on the shelf, but _____ of them is useful to teenagers.
---Whose purse is it? ---If it isn’t yours, it must be _________.
________ a lot of trees in this area, but now we can see a tall building instead.