I’m sorry，the sales manager is not________.He is on the telephone at the moment.

Mary knows so much about . earth!—Yes, you know she is only . eight-year-old girl.

Knowing how well he________ his future career,I feel confident that he will make a success.[ ]

We are not sure if it ______ when we have our school sports meeting on Friday.

Jane, which color do you prefer, red or blue —______. I prefer to buy a green one.