The problem many children,especially girls,have school is getting more and more serious.
A. which;got out of
B. that;dropped out of
C. that;fallen out of
D. which;run out of
网友回答
A. which;got out of
(答案→)B. that;dropped out of
C. that;fallen out of
D. which;run out of
解析：第一空需要引导同位语从句的词，而which不可引导同位语从句。故排除A、D两项。drop out of school意为“辍学”，故选B项。