You should understand the math problem now, you have had it ______ three times. [ ]A. explaining B.

题目简介

You should understand the math problem now, you have had it ______ three times. [ ]A. explaining B.

题目详情

You should understand the math problem now, you have had it ______ three times.
[     ]
A. explaining
B. to explain
C. explained
D. explain
题型:单选题难度:中档来源:期中题

答案

C

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