Shen Ning says in 2009, when the H1N1 bird flu broke out, her father stayed at the college measuring the body temperature of every student for almost a month. A. that B. which C. what D. while 题目和参考答案——青夏教育精英家教网—

题目内容

Shen Ning says _______in 2009, when the H1N1 bird flu broke out, her father stayed at the college measuring the body temperature of every student for almost a month.

A. that B. which C. what D. while