giúp em mấy câu này với ạ 1. He can't raise the hamster if his parents don't allow him to. Unless .................... 2. If I hadn't called him last night, he wouldn't have told me about his new job Had .................... 3. I couldn't have submitted the files successfully without your instructions. But for .................... 5. I wouldn't have finished arranging the furniture if your brother hadn't helped me. Without .................... 6. I would make a lot of money if I invested in the real estate business. Were .................... 7. The company will not be permitted to operate if it doesn't have a water recycling system. Providing that .................... 8. If I have time, I will visit Denmark some time next year. Should .................... 9. You have to renew your passport so that you can stay in this country for a longer time. As long as .................... 10. I need to put all my important documents in plastic covers so that they will retain longer. With .................... 11. If your dog were mine, I wouldn't maltreat it the way you are doing. Were .................... 12. If he enjoys snowboarding, he may go on the vacation with you. Should ....................