— Mr Smith this week?— No. He is on holiday.A. Has; workedB. Does; workC. Did; workD. Is;

问题补充：

— Mr Smith this week?

— No. He is on holiday.

A. Has; worked

B. Does; work

C. Did; work

D. Is; working

答案：

@@A. Has; worked@@B. Does; work@@C. Did; work@@(答案)D. Is; working

解析：根据答句He is on holiday.说明动作处于正在进行状态，而不是完成性的、过去发生的或经常性的动作，故排除选项A、B、C，选用现在进行时。