题目内容
4. 1 am good at .
A. sing B. to sing
C. singing D. sings
4. C
固定短语be good at doing sth.意为“擅长做某事”,故答案为C.
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题目内容
4. 1 am good at .
A. sing B. to sing
C. singing D. sings
4. C
固定短语be good at doing sth.意为“擅长做某事”,故答案为C.