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31. Einstein didn’t care for money. Once he used a check _____ $1000 as a bookmark and then he lost it.

31. Einstein didn’t care for money. Once he used a check _____ $1000 as a bookmark and then he lost it.

A.for                           B. of                         C. about                       D. To

31. Einstein didn’t care for money. Once he used a check _____ $1000 as a bookmark and then he lost it.