单项选择题
A. on themselves
B. on not making a fault
C. to a fault
D. to remain ahead
单项选择题 I was most favorably struck by the assurance with which the boy answered all my questions（）
单项选择题 Since there are so few conservative thinkers on the committee, their influence on its recommendations is（）
单项选择题 According to the international regulation, the playing of the national anthem ______ all sports events.