根据句子意思填入所给单词的适当形式。 1. I (be not)a middle school student. 2. She (be)in Class Six, Grade One. We (be)all Young Pioneers. 3. Sam and I (be)in different classes. 4. I'm (UK). I'm from (UK). 5. There (be) a pencil-box and some books in the bag. 6. There (be) two bikes and a car near the house. 7. I can (see) some flowers on the table. 8. Would you like (borrow) it? Does he like (sing) ? 9. We (stay)at home on Sundays. He (go)to classes every week. 10. You must (find)those things. 11. Would you like (something) to drink ? 12 She often (buy)things in the shop. 13. (not jump)too high! Would you like (drink)tea? 14. The (child) are talking to a (visit). 15. What are (they)job? 16. I' ve (get) a stomachache. 17. Can you (look)after her? 18. Don' t (talk). Jim (do) his homework. 19. —What you (do) ? —I (close)the windows. Look ! The windows are (close)now. 20. I' m sorry (see) that.