When can I see you, Mr Black? Three o’clock this afternoon?——Oh, noI _____ a meeting then

When we speak to people, we should be .

I’m surprised that John is only 25. I thought he was________ , for he seems to be in his thirties.

MrSmith ______ the grammar book meant for senior high school students and will almost finish it

Using many symbols makes ________ to put much information on a single map. [ ]