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一、选择题.（共20分，每空1分）
1. The roads here ______ clean ______ those in our hometown.
A. are as, as B. is so, as
C. are so, as D. is as, as
2. It is very important ______ us to keep ______.
A. for, healthily B. for, healthy
C. to, healthily D. to, healthy
3. I’m ______ ride my bike anywhere in the city.
A. afraid not to B. afraid not
C. not afraid to D. not afraid
1. The roads here ______ clean ______ those in our hometown.
A. are as, as B. is so, as
C. are so, as D. is as, as
2. It is very important ______ us to keep ______.
A. for, healthily B. for, healthy
C. to, healthily D. to, healthy
3. I’m ______ ride my bike anywhere in the city.
A. afraid not to B. afraid not
C. not afraid to D. not afraid
