问题补充：
--How does your mother look?
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A. She is a teacher.
B. She likes reading.
C. She looks tall and slim.
D. She walks to school.
答案：
A. She is a teacher.
B. She likes reading.
(答案→)C. She looks tall and slim.
D. She walks to school.
解析：How does your mother look?的意思是“你们长得怎样？”，所以应该回答，她妈妈的外貌。所以答案应该选C，“她看上去又高又苗条。”A的意思是“她是一个老师。”；B的意思是“她喜欢阅读。”；C的意思是“她步行去上学。”都与题干不符。所以本题选C、
