英语翻译 Government reports,examination compositions,legal documents and most business letters are the main situations ______ formal language is used. A.in which B.on which C.in that D.at what
A对的,相当于 formal language is used IN government reports, examination compositions, legal documents and most business letters are the main situations. that前面不能加介词的,当前面需要用介词时,人用whom,物用which 以...