It is not easy______the answer to the difficult math problem.A、to figure outB、f

游客2024-01-14  18

问题 It is not easy______the answer to the difficult math problem.

选项 A、to figure out
B、figuring out
C、figure out
D、being figured out

答案 A

解析 It is做形式主语后面加to do形式,因此选A,其他选项不符合题意。
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