问题
选择题
He usually goes to school ____ bike, but sometimes he _____a taxi to school.
A．with, on
B．on, by
C．on, with
D．by, takes
答案
答案：D
题目分析：句意：他通常骑自行车去上学，但是有时他乘坐出租车去。第一空用by bike或on his bike都可以；but后的句子没有谓语动词，所以这里缺少动词，故用takes，故选D。