问题补充:
I would have gone to visit him in the hospital had it been at all possible, but I fully occupied the whole of last week.
A. were
B. had been
C. have been
D. was
答案:
A. were
B. had been
C. have been
(答案→)D. was
解析:考查时态。I would have gone to visit him in the hospital had it been at all possible是含有虚拟语气的句子;but I fully occupied the whole of last week.是真实的情况,要用陈述语气,再根据时间状语last week,可知要用一般过去式。所以选D。