They usually go to school by subway.[用never替换usually]

They usually go to school by subway.[用never替换usually] i usually go to school by subway.【变为否定句】 they usually go to school by underground的同义句 They go to school by subway(对by subway提问) Usually I go to school by plane She usually by bus go to school Usually I go to school by plane. i usually come to school by subway[对by subway 提问 They usually go to work bu subway 改为同义句 They usually ()()()t Maria usually gets to school _____ subway是用on还是用by?为什么? we usually go to school by bus和we usually comes to school by （ ）do you usually go to school? I usually go to school by bu