many oftem can’t catch up with others inmany subjects because of

many oftem can’t catch up with others inmany subjects because of
many oftem can’t catch up with others inmany subjects because of

many oftem can’t catch up with others inmany subjects because of
这句可能应该是many of them,而不是many oftem,many often也讲不通,
所以应该是：他们中不少人在很多学科上都赶不上其他人,因为……

很多在很多学科中不及其他人，是因为......