they felt h________that they could do something for a better environment
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theyfelth________thattheycoulddosomethingforabetterenvironmenttheyfelth________thattheycoulddosometh
they felt h________that they could do something for a better environment
they felt h________that they could do something for a better environment
they felt h________that they could do something for a better environment
happy
他们能为改善环境做些事,他们感到很高兴
happy
HAPPY 把Fell smell sound touch 当系动词用，后面跟名词