绝对线上的高中英语
Thestudents_______busilywhenMissBrownwenttogetthedictionaryshe______intheclassroom.
A.hadwritten;left
B.werewritting;hadforgotten
C.hadwritten;hadforgotten
D.werewritting;hadleft
【这题怎么做?很急帮翻译+解析】
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