Pleasewriteareport________theabovesubjectsaretobecovered.
B
in which the above subjects are to be covered 是 report 的定语从句。 which 指代先行词report ， in 用于与 report 搭配。
Astothevariouspollutions,whichofthefollowingisNOTtrue?
You’llbetheretomorrow--youwon’t________me________,willyou?
Motivationandpersonalitymay________thevaryingdegreesofsuccessinone’scareer.