为了保障旅游者和旅行社的合法权益，国家旅游局规定从2001年9月起，必须投保旅行社责任保险。 （ ）
参考答案：对
We should try our best to make _____ as possible when we speak English, or we'll make ourselves _____. [ ]
A. as few mistakes; mistaken
B. as few mistakes; mistake
C. so many mistakes; mistaken
D. so few mistakes; to mistake
