this volunteer work takes each of them several hours a week(改为同义句)

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 ( )( )( )( ).

It takes each of them several hours a week to do this volunteer work.
my birthday is in a half month.