—Why didn ’t you buy a new car?
—I would have bought one if I _______ enough money.
A、hadD
第一个had是过去完成时，第二个had表示“有”。
The twin sisters were identical ________ appearance and character.
ltisnecessary___youtocomplywithourshippinginstructions.
Werefer___youletterofMay2.
They wrote a letter of thanks to ________ had helped them.
______ he has enough money to buy the house, it doesn ’t mean he ’s going to do so
