问题：
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.If possible
D.If so
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.If possible
D.If so
A.Otherwise
B.If not
C.If possible
D.If so
参考答案：