the old man could not decide whether to spend the money or t

the old man could not decide whether to spend the money or to put it in the bank.A.if he spent
B.whether to spend C.that he spent .D.what to spend,我知道选B,原因呢,

后面有or,是个选择,所以前面应该用if或whether.
or 后面是to put.它前后句子结构应该一致,所以前面也应该是to.
所以B

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