问题

that they may eventually reduce the amount of labor needed on construction sites by 90 per-cent.

A:Such construction robots are clever
B:So clever the construction robots are
C:So clever are the construction robots
D:Such clever construction robots are

正确答案是：

同类题型

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正确答案网

that they may eventually reduce the amount of labor needed on construction sites by 90 per-cent.