高等继续教育 / 大学英语语法
正确率：100%
题型描述: 单选题
A more important question is ＿＿＿＿＿ retain his championship.
A.whether can he
B.that he
C.whether he can
D.where he can
A more important question is ＿＿＿＿＿ retain his championship.
A.whether can he
B.that he
C.whether he can
D.where he can
参考答案：
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