题目

 ---What should we do to fight A/H1N1 flu? ---We should wash hands often, avoid ______ to crowded places and so on. A. go       B. going          C. gone       D. to go 答案：BAlthough the Roman couldn’t be forced to pay taxes, they couldn’t vote 　　　they agreed to　　　 ________the government. A. unless; submit to　　　　　　　　　　　　 B. until; correspond to C. when; resign to　　　　　　　　　　　　　 D. while; compromise to