Thegirllookssohappy.She　　　　abouttheresultofherperforman...

问题详情：

The girl looks so happy. She　　　　about the result of her performance.

ld have known                                   d have known

d have known                                     have known

【回答】

D

知识点：虚拟语气与情态动词

题型：选择题