The math problem is too difficult for him to work out.(写出同义句)The math problem is _____ difficult _____ he can't work it out.

问题描述:

The math problem is too difficult for him to work out.(写出同义句)
The math problem is _____ difficult _____ he can't work it out.

so that
同义句:
The math problem is too difficult for him to work out.

so that
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