She comes to school ___ a bike today.A:ride B:in C:on D:by.`

问题描述:

She comes to school ___ a bike today.A:ride B:in C:on D:by.`
英语好的说下`

注意区分by bike和on a bike
当特指用某辆自行车(即有冠词时),用on,其余用by