The child _______ on the chair and eating a cake.A.siting B.sitting C.ia sitting D.is sat

问题描述:

The child _______ on the chair and eating a cake.A.siting B.sitting C.ia sitting D.is sat

填 A/B,使得句子没有谓语,错; 填D sat不能和eating构成并列; 故C!