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The foreigner tried his best, but he still couldn't make his point                   .

A. understand  B. understanding               C. to understand   D. understood

The foreigner tried his best, but he still couldn't make his point _______ .

　A. understand　        B. understanding　              C. to understand 　        D. understood

The foreigner tried his best, but he still couldn't make his point _______ .

　A. understand　        B. understanding　              C. to understand 　        D. understood

 The foreigner tried his best, but he still couldn't make his point ____ 　.
　 A. understand　    B. understanding 　        C. to understand 　         D. understood

The foreigner tried his best, but he still couldn’t make his point ____ 　.

A. understand　  　 B. understanding 　 C. to understand 　      D. understood