—Hey,thewashinguphasbeendone!—That
问题详情：
— Hey, the washing up has been done!
— That ________ Cynthia. She's always helpful.
A. need have been B. could have been C. should have been D. must have been
【回答】
D
知识点：虚拟语气与情态动词
题型：选择题
问题详情：
— Hey, the washing up has been done!
— That ________ Cynthia. She's always helpful.
A. need have been B. could have been C. should have been D. must have been
【回答】
D
知识点：虚拟语气与情态动词
题型：选择题
