This river is too wide for the swimmers _________.
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 in it.
—Do you want to go to_______ North-east China?—Yes, I do.
-What do you think of the pop singer Jay Chou?-I think he can’t sing enough and it is hard to understand* .