问题描述：
this volunteer work takes each of them several hours a week(改为同义句）
（ ）（ ）each of them several hours a week ( )( )this volunteer work.还有：my birhtday is in two weeks time(改为同义句）my birthday is ( )( )( )( ).
（ ）（ ）each of them several hours a week ( )( )this volunteer work.还有：my birhtday is in two weeks time(改为同义句）my birthday is ( )( )( )( ).
问题解答：
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