The driver looked over the engine carefully to make sure that it wouldn’t ________ on the way．

1. A.
   break into
2. B.
   break down
3. C.
   break up
4. D.
   break out

The driver looked over the engine carefully to make sure that it wouldn’t ______ on the way.

A. break into                B. break down              C. break up                   D. break out