Jim always complain ____ his parents ____ being busy.A.about,ofB.of,aboutC.to,aboutD.about,to顺便问一下,complain为什么不加s,Jim不是第三人称单数吗

问题描述:

Jim always complain ____ his parents ____ being busy.A.about,ofB.of,aboutC.to,aboutD.about,to
顺便问一下,complain为什么不加s,Jim不是第三人称单数吗

选A,不加S应该是印刷错误···