It’s too cold .You had better ______your coat.A:don’t take off B:not take off C:don’t put on D:not put on
-Is everyone here today? -No, Jack is at home____ he is ill.
You should take____ umbrella if it rains.
--Alice, you got an A in this science exam. ---__________________.You know I am not good at it.
I think Hainan is one of ___________in China.
It’s really nice of you ________me with Chinese problem