Question

It sounds like something is wrong with the car’s engine. _____ , we’d  better take it to the garage immediately.

A．Otherwise	B．If not
C．But for that	D．If so

Answer 1

D

考查连接词。otherwise 否则 if not 如果不  But for that 要不是那样的话 If so 如果是这样的话根据语境，D正确。