问题补充:
– I have got a headache.
--No wonder. You in front of that computer too long.
A. work
B. are working
C. have been working
D. worked
答案:
(答案→)A. work
B. are working
C. have been working
D. worked
解析:考查时态。work和are working是一般现在时和现在进行时,只说明了现在的情况,而未包含过去的,故排除A和B;而worked只说明了过去,未包含现在,故排除D,只有C用了现在完成进行时,既包含了现在,又包含了过去,说明了动作对现在的影响是你头痛了,A是正确的。