---What is that? Is it an English learning machine?---Yes. It ________ us to improve our English.A. is used for helping B. used to help C. used to helping
---____ does Jim usually ____ to school? ---After breakfast.
–Who isn’t ____ today? ---Wang Lin is.
Do you see Lily ____ her bike?
Why ____ he often late for school?
--____? ---Yes, I’d like a cup of tea.