一．单项选择
（ ）1.. Which one is ____ , the white one or the black one?
A. good B. better C. best D. well
（ ）2. The twin brothers ______ students.
A. are both B. both are C. are all D. both is
（ ）3. Jim is great! He is good ______ every subject.
A. for B. at C. to D. with
