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31.All parents are willing to risk ________ their lives to save ________ of their children when a disaster is approaching.
A.losing; that | B.to lose; those | C.losing; those | D.having lost; the ones |
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31.All parents are willing to risk ________ their lives to save ________ of their children when a disaster is approaching.
A.losing; that | B.to lose; those | C.losing; those | D.having lost; the ones |