问题
单项选择题
The rest of the family had nearly reached the river, but Jane was（）behind as usual.
A.declining
B.delaying
C.lacking
D.lagging
答案
参考答案：D
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The rest of the family had nearly reached the river, but Jane was（）behind as usual.
A.declining
B.delaying
C.lacking
D.lagging
参考答案：D