Rather than ____ on a crowded bus, he always prefers ______ a bicycle.

A．ride; ride

B．ride; to ride

C．riding; ride

D．to ride; riding

检修工到达接班地点，（）本班乳化液泵站的运转状况、故障处理情况及遗留问题。

A.观察

B.检查

C.不询问

D.询问