—How could you________ my mother so easily in the crowd?—Because she stood out in her red dress.
Tom was at a loss as to how a car worked, so it was ______ that he knew nothing about how to repair cars.
Mammals ________ nearly all warm-blooded animals except birds.
A study ______ that women find it more difficult to give up smoking than men.
A wonderful idea ______ me that day when I met with a tough problem.
You’ve done so much work —you’re ____ pass the exam.