giúp em mấy câu này với ạ 1...........,I will go on a safari in Africa. A. If I had enough money and time B. Should I have enough money and time C. Were I to have enough money and time D. Had I had enough money and time home. 2............,we will have enough time for lunch before going A. Should Tim's train arrive on time B. Had Tim's train arrived on time C. If Tim's train arrived on time D. If Tim's train had arrived on time 3.__________, many people would have a chance to live longer. A. If a cure for cancer had been found now B. Were a cure for cancer be found now C. Should a cure for cancer be found now D. Were a cure for cancer found now 4..........,people would not have been able to develop the economy. A. Had computers not been invented B. Had not computers been invented C. Were computers not to be invented D. Were computers to not be invented 5.......,many of them wouldn't have died out. A. Should we stop destroying the animals' habitat B. If we stop destroying the animals' habitat C. Had we stopped destroying the animals' habitat D. Were we stop destroying the animals' habitat 6._______, my mother's housework would have been a lot easier. A. Had we a vacuum cleaner B. Had have we a vacuum cleaner C. Had we had a vacuum cleaner D. Had had we have a vacuum cleaner 7._____, he would have been promoted to the management position. A. Had he worked harder B. Should he work harder C. Were he to work harder D. If he worked harder 8.......,I would get an A for this subject. A. If I would pass the exam last week B. Were I to pass the exam last week. C. Had I passed the exam last week D. If I should pass the exam last week 9...............,they wouldn't have caught in the accident. A. Had been they more careful B. Should they have been more careful C. Had they been more careful D. Had they not been more careful