Are you going by l____ ,by sea or by air?

will you travel by sea or by air的意思! will you travel by sea or air?和will do travel by sea or air? will you travel by sea or air?和will you do travel by sea or will you travel bay sea or by air by the air or by air It is up to you to decide __you are go there ,by air or by r you _______go to Beijing by air or by train. 不是说情态动词不能单独作谓语吗?1:Will you travel by sea or by air?2:We may 海边 英语by sea or by the seaTom lives__________ (by sea /by the 1.__ are you going to the beach?By air A.how Bwhere C.what D we are often()by colors,weather or the air temperature we are going by