When the fire broke out, Mary didn't know _____. [ ]A. what doB. what thing to do C. what to do

题目简介

When the fire broke out, Mary didn't know _____. [ ]A. what doB. what thing to do C. what to do

题目详情

When the fire broke out, Mary didn't know _____.
[     ]
A. what do
B. what thing to do
C. what to do
D. to do what
题型:单选题难度:偏易来源:同步题

答案

C

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