6.We can no longer tolerate his actions. A put up with B accept C take D receive 7.Loud noises can be irritating. A hateful B painful C stimulating D annoying 8.In the background was that eternal hum. A long B never-ending C boring D extensive 9.The Constitution's vague nature has given it the flexibility to be adapted when circumstances change. A imprecise B apparent C clear D easy 10.Gambling is lawful in Nevada. A enjoyable B irresistible C legal D profitable 參考答案：6. A 7. D 8. B 9. A 10. C