Question

The man sat ________ the bus, because he is the driver.

A．in front of

B．at front of

C．in the front of

D．the front of

Answer 1

B

in front of在…前面， in the front of 在…前部(在某范围以内)
at the front of 在…前部与in the front of同意
at…强调“前部的某一点” in强调在…范围的前部 故选B.