林先生今天早上乘公共汽车上班而不是步行. Mr Lin went to work____________walking.
问题描述：
林先生今天早上乘公共汽车上班而不是步行. Mr Lin went to work____________walking.
答
by bus but not
答
by bus but not
答
by bus instead of
instead of 代替；而不是,后面加动词的ing形式.