—According to the agreement you must finish the work by this month.—Don’t worry.We’re tryi

问题补充：

—According to the agreement,you must finish the work by this month.

—Don’t worry.We’re trying hard and itthat long.

A. hasn’t lasted

B. won’t last

C. didn’t last

D. doesn’t last

答案：

A. hasn’t lasted

(答案→)B. won’t last

C. didn’t last

D. doesn’t last

解析：由题意可知此处应用一般将来时。答语意为“别担心!我们会尽力的，它不会拖那么长时间的”。