当你把Li Lei介绍给别人时,你应说:A. Hello. B. Fine, thanks. C. This is Li Lei
---____did she go to Beijing? ---You won’t believe it! On foot.
--____will you come back? ----In an hour.
I ___the blackboard, but I can’t ______a word.
--______dress is this? --It’s my dress.
We have five_____.