When_______,waterwillbeturnedintosteam.
A、heatedA
水被加热时会变成蒸汽。因为主句主语 water 和从句谓语 heat 的关系是被动的，所以用过去分词。
AlthoughTomissatisfiedwithhisacademicachievement，hewonders_______willhappentohisfamilylife.
Fish is ________ and expensive at this time of the year in this area.
Iunderstoodfromherthatyouundertookotherimportantwork______.
Thegovernmentfinally________allthedocumentsrelatingtothewar.
During the past two decades, research has ________ our knowledge of daydreaming.
