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
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
A