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P17-18 I. 略 II. triangle, square, rectangle, round/circle III. 1-5BCBCC 6-10AABCA 11-14ABCA IV. 1-5BBBCB 6-10BBCAB V. Name P19-20 I. 略 II. 1. see, sea 2. their, there 3. right , write 4. no, know 5. sun, son 6. hear, here 7. I, eye 8. for, four III. B-A-D-F-E-C 2—3—4—1 IV. 略 V. 略 P21-22 I. 1-5 ehabc 6-10 gifjd II. 1. He is playing tennis. Yes, I do. 2. They are playing hockey. No, I don’t. III. 略 IV. twelve, January, second, of, Spring Festival, third, on, fourth, on, May, it, it, June, June, sixth, seventh, September 10th, on, October, eleventh, December, twelfth, Christmas P23-24 I. 1. to go 2. are making 3. the second 4. skating 5. harvesting 6. warmer and warmer 7. are singing 8. is II. 1. is, He, He’s fishing 2. they aren’t, playing volleyball 3. They are performing. celebrating 4. he isn’t, He is swimming. III. 1. It’s Saturday. 2. My father is. 3. He is drawing. 4. She is reading a storybook. 5. You’re playing computer games. P25-26 | 
