-- I’m exhausted. I on a project day and night.-- You’d better have several days off afte

-- I’m exhausted. I on a project day and night.
-- You’d better have several days off after finishing it. Otherwise you might break down.
A. worked
B. have worked
C. work
D. have been working

A. workedB. have workedC. work(答案→)D. have been working解析：考查时态：句意：--我很累，我整天都在忙着这个计划。-结束后你最好休息几天，否则你会垮掉的。说明做这个项目是从过去到现在说话的时候一直进行的，有可能还要继续，用现在完成进行时，A是一般过去式，表示纯粹的过去的动作，B是现在完成时，表示过去的动作对现在的影响，C是一般现在时，表示一贯的行为，所以选D。

正好我需要