43. 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

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D was可能的话我就去医院探望他了,但是整个上星期我都太忙了。“整个上星期我都太忙了”是叙述过去的情况,所以用一般过去时。