高等继续教育 / 大学英语语法
正确率：100%
题型描述: 单选题
We did ＿＿＿＿＿ to help the blind.
A.all what we could
B.all the things what we could
C.all which we could
D.all we could
We did ＿＿＿＿＿ to help the blind.
A.all what we could
B.all the things what we could
C.all which we could
D.all we could
参考答案：
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