问题
选择题
1 often take a bus to school, but _____I go to school by bike.
A．some time
B．sometime
C．some times
D．sometimes
答案
答案：D
考查副词。句意为：我经常坐车上学，但有时候我骑自行车上学。A. some time“一段时间”；B. sometime“某时候”；C. some times“几次”；D. sometimes“有时候”。结合句意，故选D。