---Peter, is this your pen?---Yes, it's ________. Thanks a lot. I looked for it everywhere.A. mine B. me C.I
-- They look so tired. --Yeah. They _____________ day and night. So they are all in poor health.
-- What is the function of the mouse? -- It________ the cursor(光标) on the screen.
-- I’m sorry we ________ all the educational CD-ROM. Can you come next week? -- Please call me as soon as the latest one _________.
He is a teacher with a lot of ______. He often tells us many of his interesting _____ in Africa.
A: Can I _______ a book from you? B: Certainly. But you mustn’t ______ it to others. And please remember you can only ______ it for a week.