--- How is Helen in the new school?--- She is doing very well. There is ____ to worry about(担心).
---What’s the matter ______ you? ---I have a toothache.
--- How many students are there in the school? ---There are about ______.
Does hea bus ____?
Tom knows Chinese well. Hesay some English words.
---______ does it take you to go to Beijing by train? ---About two days.