42 . I would have told him the answer had it been

I would have told him the answer had it been possible, but I have been so busy then.（

I would have told him the answer had it been possible, but I ______ so busy then.A．amB．wer

It is one of the best concerts I_____ .A. went toB. had gone toC. have ever been to

Benjamin told me his father had decided to support him and ______ he would quit the school

It occurred to me______ if I had continued to maintain eye contact, I would have been rude

I would have come to see you had it been possible, but I______so busy at that time.A．had b