--- When did you meet your English teacher?--- While I _________ a bike along Jiaomen River.
---Do you know girl over there? ---Yes. She is exchange student from America.
单词辨音
--It’s so hot here. Do you mind ____________ the window? ---____________. I will do it right now.
My computer broke down, but I am not clear ___________________.
--- What do you think of what I said? --- Sorry. I _____ about something else.