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用括号内所给单词的适当形式填空
1.-- What’s this? -- It’s _________ (she) book.
2. This is ________ (he) classroom.
3. I have(有) three ________ (notebook).
4. -- Can you ________ (write) your name, please? -- Yes, sir.
5. -- Is this your pencil?-- No, it ________ (is).