Ifhe_____thestorekeeper‘sscissors，hewouldhaveforgottentobuyapair.
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 had done，主句 谓语用 would/couldmight have+done.
Yourbikeneeds_____.You‘dbetterdoirightnow.
Williamhascuthissmoking_____tofivecigarettesaday.
Childrenwhoareover-protectedbytheirparentsmaybecome_____.
Two-thirdsofhisproperty_____lostinthefire.
Hewasvery_____togo，buthehadnochoice.
