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。