问题 选择题

To test eggs,_____ them in a bowl of water: if they float they’re bad, if they sink they’re good.

A.put

B.putting

C.to put

D.to be putting

答案

A

句首的 to test eggs 为目的状语,填空句为祈使句谓语,故要用动词原形。

判断题
填空题