He has a good mand maths and plays an important part our team.
A. about; in
B. of; to
C. to; about
D. of; in
网友回答
A. about; in
B. of; to
C. to; about
(答案→)D. of; in
解析：have a good mand of: 对……掌握很好。play an important role in … 在……中发挥重要作用。 本题意为：他数学学得很好，在我们队发挥重要作用。故D项正确。