The operation John had was not successful.为什么用had呢,

please tell me whether my operation had been successful. John was the only one ____I had invited. we had better not read in the sun.为什么用in不用under呢? He asked if Mr.Gilbert's operation had been successful and t If they had had money,they would lent you 为什么用had had呢、 the weather was very good ,____we had not expected he `s not yet had time to make a judgement.为什么这里用had 而不用has呢 the dream he had had for so many years ended there.为什么两个had呢 The teacher had John _at the door for an hour beacuse he was ______the operation successfully,the doctors once again had the girl was able to explain what had happened.不是被动语态为什么用was Mr．John said that Suzhou was the first city ________ he had