21.The man managed to make himself       in his       French.

A.understood,breaking                     B.understand,broken

C.understand, breaking                     D. understood, broken

22.“Listen,there        .”“Oh,yes.There        .”

A. goes the bell,it goes                      B. goes the bell, goes it

C. the bell goes,it goes                      D. the bell goes, goes it

23.__________ fired, your health care and other benefits will not be immediately cut off.

    A. Would you be     B. Should you be   C. Could you be      D. Might you be