-Blue can help____when you are angry.-So we'd better wear blue clothes.A.calm you downB.calm down you C.to calm you down D.both A and C为什么选D啊,不是help do sth.么,为什么有to啊
问题描述：
-Blue can help____when you are angry.-So we'd better wear blue clothes.A.calm you down
B.calm down you C.to calm you down D.both A and C
为什么选D啊,不是help do sth.么,为什么有to啊
答
to 就是有的 只不过是可以省略罢了
答
to可省也可不省
答
help do sth.和 help to do sth.意思差不多,都可以用的.help do something更常用一点.