— Come and join us, Jimmy!— I’m sorry, but I’m really busy now. If I time, I would certainly go.
--! Where is my pencil? --,I don’t know.
This is Jim. ______ twelve.
Boys and girls, I have ________ to tell you. A. important something B. something important C. anything important
--Must I come at four o’clock? -- Oh, no, you ______. A. can’t B. mustn’t C. needn’t.
I’m sorry I kept you ______ for a long time. A. wait B. waiting C. waited