Mr Wang______an article on how to improve spoken English last month, but I don’t know whether he has finished it.
— I rang you at about nine, but there was no reply.— Oh, that was probably _____I was seeing the doctor.
— There'ssomeone knocking on the door. Who _____it be?— It must be Mary. She promised to be here at 8:00.
Www.sda.gov.cn, which has _____food and drug channel with clear explanations, is _____very popular website.
It’s years since we last saw each other .So much____ that I can hardly recognize him.
----What’s it that cost him the job?----_______ experience .He was always very nervous.