She would have been more agreeable if she had changed a little bit, ______？ [2003]A．hadn"t

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

（)could have been more annoying.

If the captain ____more careful, his ship would not have been sunk.A．should beB．were to be

He must have had an accident, or he _____ thenA:would have been hereB:would be hereC:s

Large-scale hydroelectric power stations have been playing a more and more important part

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