This activity can not only boradens our horizon but also foster our noble spirits .
I guarantee that you will enjoy yourself.请问foster是否要加s
人气：242 ℃ 时间：2019-08-20 17:03:50
解答
不用,foster前面省略了情态动词can
另外boradens打错兼用错,应该是broaden,情态动词can后面的动词不用单复数变化
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