1.C how /what/when +to do 可以做主语和宾语.
有些人不知道该如何来照顾动物.
2.They don't know what to do .
what to do做的是know 的宾语.
some people don't know ____ the animals
some people don't know ____ the animals
A what to care for
B how can they care for
C how to care for
D what they can care for
They don't know what they can do（同义句）
They don't know what ( ) ( )
A what to care for
B how can they care for
C how to care for
D what they can care for
They don't know what they can do（同义句）
They don't know what ( ) ( )
英语人气：160 ℃时间：2019-11-17 03:31:21
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