—Mr Green, there is someone at the front desk ______ would like to speak with you.—OK, I’m coming.
-My mother is ill in hospital.——_______.
We can use QQ to talk with each other online. --Good! Will you please show me ______it?
My mother often spends 2 hours ______ housework every day.
— Must I come at four o’clock?— Oh, no, you ____.
It’s too cold .You had better ______your coat.