Pleasewriteareport_______theabovesubjectsaretobecovered.
A、whichB
in which the above subjects are to be covered 是 report 的定語從句。 which 指代先行詞report，in 用于與 report 搭配。
Thestudentsarerequiredto________themainideasofthearticleintheirownwords.
AlthoughTomissatisfiedwithhisacademicachievement，hewonders_______willhappentohisfamilylife.
Ithasbeenfoundthatastrong________helpovercometheeffectsofdistraction.
Neverbefore_______sorapidlydevelopingasitistoday．
When_______,waterwillbeturnedintosteam.
