The experiment requires more money than _____.A、have been put inB、being put in

游客2023-11-22  16

问题 The experiment requires more money than _____.

选项 A、have been put in
B、being put in
C、has been put in
D、to be put in

答案 C

解析 语法结构。可参考1998年第44题的解释。
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