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。
Theoutlineofrooftopsandchimneys________againstthepalesky.
Anxietycan________withchildren’sperformanceatschool.
AlthoughTomissatisfiedwithhisacademicachievement，hewonders_______willhappentohisfamilylife.
The students are required to ________ the main ideas of the article in their own words.
Since we have a focused subject ，we should not talk ________.
