A computer can only to _____you have instructed it to do

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A computer can only to _____you have instructed it to do
A how
B after
C what
D when
请解析

答案C
要注意句子成分在句子中的作用.比如：“这事怎么办?”可以说What can we do with it?也可以说,How can we deal with it?因为deal是不及物动词,所以使用疑问副词how；而do是及物动词,所以后面可直接加宾语,所以用what.
谓语动词do在本句中是及物动词,其后是一个宾语从句；从句中的不定式to do也是及物动词,需要自己的宾语,四个选项中只有what可以作宾语.故答案为C.

A computer can only to _____you have instructed it to do A computer can only do ____you have instructed it to do. 2 Computers can only do ___we have instructed it to do.AhowB A computer can only do _____ you have told it to do after/whatComputers can only do ____you have told it to do.A If we can not have,it only can do is to let themselves do no A computer does only what thinking people have it do. If only I__how to operate a computer as you do. 英语-填空A:Can i do anything _____you?B:I'd like to buy a sweate It's too hot,I want to eat a lot of ice cream._____You can e I didn't manage to do it _____you had explianed how.A.until only then _____ have a chance to do it.A.I will B .will I C