24. —Mr Smith John this week? A friend of his is coming to see him this afternoon. —No.

问题补充：

24. —Mr Smith, John this week? A friend of his is coming to see him this afternoon.

—No. He is on holiday.

A. has; worked

B. is; working

C. did; work

D. does; work

答案：

A. has; worked

(答案→)B. is; working

C. did; work

D. does; work

解析：可联系答.案.网客服索取。