The public library ....is open.... to all readers who are interested in reading and doing research. Đáp án trong đề mình là như vậy. Cho mình hỏi tại sao lại là "is open" mà không phải là "is opened" ạ?

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11. What ____________they (do)________________in the winter? 12. Today, we (have)______________English class. 13. Her favourite subject (be)__________________English. 14. Now, my brother (like)_________________eating bananas. 15. Look! A man (call)_________________you. 16. Keep silent ! I (listen )____________________to the radio. 17. ______________ you (play)_________________badminton now? 18. Everyday, my father (get up)_______________at 5.00 a.m. 19. Every morning, I (watch)_________________tv at 10.00. 20. Everyday, I (go) __________to school by bike. 21. Every morning, my father (have) ______________a cup of coffe. 22. At the moment, I(read)_______________a book and my brother (watch)_______ TV. 23. Hoa (live)________________in Hanoi, and Ha (live)________________in HCM City. 24. Hung and his friend (play)_______________badminton at the present. 25. They usually (get up)___________________at 6. oo in the morning. 26. Ha never (go)___________fishing in the winter but she always (do)________ it in the summer. 27. My teacher (tell)__________________Hoa about Math at the moment. 28. There (be)____________________ animals in the circus. 29. _______________he (watch)______________TV at 7.00 every morning? 30. What _____________she (do ) _________________at 7.00 am? 31. How old _________she (be)? 32. How ___________she (be)? 33. My children (Go)________________to school by bike. 34. We (go)_______________to supermarket to buy some food. 35. Mr. Hien (go)________________on business to Hanoi every month. 36. Ha (like)______________coffee very much, but I (not like)______________it. 37. She (like )________________Tea, but she (not like)____________________coffee. 38. I (love)_______________ cats, but I (not love)__________________dogs. 39. Everyday, I (go)______________to school on foot. 40. Who you _________________(wait) for Nam? - No, I ___________ (wait) for Mr. Hai. GIÚP CHÁU TÍP....