选词填空:用下列词汇的正确形式填到句子中去 die of no longer be aware of traffic jam quality main serious cause used to according to 1. You have to answer these questions________________the text. 2. Many children ______________hunger in Africa. 3. He ______not ____________his mistakes until the teacher told him. 4. Sorry, I’m 20 minutes late because of the ___________on the way here. 5. Carelessness always _________driving accidents. 6. His father___________ smoke, but now he doesn’t. 7. Her mother is suffering from a _________heart disease. 8. ___________ is more important than quantity. 9. He told me he would ____________go shopping with me. 10. This is the ___________ building of our college.