Why notyour teacher for help when you can’t finish it by yourself?A. ask writeB. to ask w

问题补充：

Why notyour teacher for help when you can’t finish it by yourself?

A. ask,write

B. to ask,writing

C. ask,writing

D. asking,write

答案：

A. ask,write

B. to ask,writing

(答案→)C. ask,writing

D. asking,write

解析：句意：当你不能独自写完它时，为什么不向你的老师请求帮助？固定句式why not do sth，为什么不做某事，表示用来提出某种建议等，注意not后面接动词原形，finish后面一般接名词或者动名词作宾语，不接不定式，故选C。