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。
WhichofthefollowingisnotmentionedasWTO'sobjective?
Hefound_______difficulttostudymaths.
The government called out policemen to suppress the riot.
Which of the following country is not a member of OECD?
________ he has many friends, he is often feeling lonely.
