Although our boss had been so unkind to us, we heaped coals of fire on his______by helping

He is talking so much about America as if he ____ there.A、had beenB、has beenC、wasD、been

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

I have been very lucky to have had ______ managers during my career so far.A: terrific

______the atmosphere around our Earth, we would not be able to live.A．Had it not been forB

In August we were ________ that our article had been rejected.A、modifyB、testifyC、notifyD

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