Girls I’ll tell you and you can do it .A. how to do; by yourselfB. what to do; by your

问题补充：

Girls, I’ll tell you , and you can do it .

A. how to do; by yourself

B. what to do; by yourself

C. how to do it; alone

D. what to do; on yours own

答案：

A. how to do; by yourself

B. what to do; by yourself

(答案→)C. how to do it; alone

D. what to do; on yours own

解析：句意：女孩们，我会告诉你们怎么去做它，然后你们独自做。How 引导一个宾语从句，it在句中作宾语；alone独自地；by yourself你自己独立得，这与句中的girls的复数形式不合；on one’s own一个人地，要用形容词性物主代词；结合语境故选C。