クイズ problem-solving 9
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この練習では、肯定文を読み、その否定を正しく表現する文を選びます。
⭐B2 - level.upperIntermediate
1. He has figured out the best way to solve the problem.
⭐B2 - level.upperIntermediate
2. I believe he can solve the problem.
⭐B2 - level.upperIntermediate
3. She quickly solved the difficult puzzle.