The students want to know 1 600 words in a month. A. how can they remember B. how they ca

问题补充：

The students want to know 1,600 words in a month.

A. how can they remember

B. how they can remember

C. when could they remember

D. when they could remember

答案：

A. how can they remember

(答案→)B. how they can remember

C. when could they remember

D. when they could remember

解析：句意：学生们想知道怎样在一个月内记住1600个单词。这个句子中包含一个宾语从句，表示“怎样”故用how引导，且宾语从句要用陈述语序。