look at those children.they are( )on the rop.A swinging B wagging为什么不选B?

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lookatthosechildren.theyare()ontherop.AswingingBwagging为什么不选B?lookatthosechildren.theyare()ontherop.

look at those children.they are( )on the rop.A swinging B wagging为什么不选B?
look at those children.they are( )on the rop.
A swinging B wagging
为什么不选B?

look at those children.they are( )on the rop.A swinging B wagging为什么不选B?
两者都表示摇,但是
Swing 的摇是“上端固定的摇”,正如他的名词“秋千”般摇来摇去.
Wag ,也是“摇”不过一般用于动物,类如狗狗wag its tail(摇尾巴); 要是说人,就用“their tongues wagged表示议论纷纷.