----May I speak to the headmaster?----He ______ a meeting now. Can I take a message?
During his stay in the USA, Yao Ming said that he would go back to China ______ he was needed.
— Why are you looking in class all day? —Because I can’t finish my homework until eleven every night.
You can’t imagine__________ when they saw the nice Christmas presents.
—How long do you think it’ll be ______ I can go back to school?—Well, you will be feeling much better by next weekend.
— How is your cousin, Andy?—He lives abroad, so I _________ ever see him.