Pleasewriteareport________theabovesubjectsaretobecovered.
A、whichB
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。
_______ in thought, he almost ran into the car in front of him.
You’llbetheretomorrow--youwon’t________me________,willyou?
______ a little earlier, I would have caught the train.
Chinaisamountainouscountry.Hills,mountains,andplateauscover_______ofthetotalarea.
InEurope_______arethetwoleadingcontendersforaglobalreservationssystem.
