he let me repeat his instruction ___ sure that i ubderstand what was ____ after he went away.

题目

he let me repeat his instruction ___ sure that i ubderstand what was ____ after he went away.
A.to make, to be done
B.making, doing
C.to make, to do
D. making, to do
为什么选A 不选C

答案

A.to make,to be done
首先第一个空格应选to make,动词不定式表目的
第二个空格,看后面是went away,表明该事件发生在过去,what was to be done ,被动,或者要用不定式也要说成what to do