by bike 是交通工具,即就方式状语提问,用how提问：how does L usually go home
一般疑问句只需将系动词、助动词等提到主语前再把句末符号改问号就可,如果是实义动词则要借助助动词,如do,does,did等提问.Is the bank in front of the science museum?