-Do you know Neil Armstrong?-- Yes he is the first man on the moon..A. walkB. wal

问题补充：

---- Do you know Neil Armstrong?

---- Yes, he is the first man on the moon..

A. walk

B. walks

C. to walk

D. walked

答案：

A. walk

B. walks

(答案→)C. to walk

D. walked

解析：在英文中，动词修饰the first man在后，通常用动词不定式作后置定语，故本题选C。