14．Mum you really need to have a. rest! Youin the kitchen ever since you came back home t

问题补充：

14．Mum, you really need to have a. rest! Youin the kitchen ever since you came back home three hours ago.

A. had worked

B. were working

C. have been working

D. Worked

答案：

A. had worked

B. were working

(答案→)C. have been working

D. Worked

解析：可联系答.案.网客服索取。