— __________ is this?—It’s ________.
I don’t like winter _____ it’s too cold.
Your mother know the truth, but I am not sure.
On April 20,2013, a serious earthquake happened in Ya’an. Many people a in it.
—Do you want to go to_______ North-east China?—Yes, I do.
---Hey, Ben. Why didn’t you go to Eric’s birthday party?---I had to the final-term exams.