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用Be 动词的适当形式填空。 1. Jack ______ late for school yesterday, for he ______ ill. 2. I ______ in the same school as Ted last year. 3. The windows of the office ______ not open yesterday. 4. How old are you going to ______ next year? 5. Let's ______ good friends, shall we? 6. There ______ a lot of flowers in the garden last summer. 7. We ______ often hungry after a long trip. 8. The leaves ______ green in spring. 9. The weather tomorrow will ______ fine. 10. The wind last night ______ very strong.