见到客人站着,你应说,A.Sit down.please. B.How are you? C.I'm fine,too.
We will go shopping if it _______ tomorrow.
One of the boys _______ a black hat.
Jenny _______ in an office. Her parents _______ in a hospital.
There _______ a football match in our school this afternoon.
There _______ not any water in the glass.