english is widy used.many business letters around the world()initA.are written B.were written C.are writing C.were writing

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english is widy used.many business letters around the world()initA.are written B.were written C.are writing C.were writing
english is widy used.many business letters around the world()init
A.are written B.were written C.are writing C.were writing

english is widy used.many business letters around the world()initA.are written B.were written C.are writing C.were writing
选A,前后时态一致,复数用are