Most of the men __________climb out of the burning ship in time. However, four men were not quick enough to escape the flames.

A.　　  could　　   　　　　　　   　　　　　　  

B.　　  were able to

C.　　  had to　　  　　　　　　   　　　　　　  

D.　　 would rather

A.　　  could　　   　　　　　　   　　　　　　  

B.　　  were able to

C.　　  had to　　  　　　　　　   　　　　　　  

D.　　 would rather

Most of the men ______ climb out of the burning ship in time．However, four men were not quick enough to escape the flames．

A．could                         B．were able to                  C．had to                   D．would rather