If he_____the storekeeper ‘s scissors ，he would have forgotten to buy a pair.
B
本题测试的是虚拟语气的用法，其中的条件从句用过去完成时haddone，主句谓语用would/couldmighthave+done.
_____youunderstandthisrule，you‘llhavenodifficultyindealingwithsuchproblems.
Hewasvery_____togo，buthehadnochoice.
Two-thirdsofhisproperty_____lostinthefire.
Bothofmybrothersarenowmarried，soIhavetwo_____.
_____hespeakssoftlyisnoproofthatheiskind.
