Scientists have discovered that there is water on Mars.(been)
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Our teacher was relieved when he heard that all of his students had made progress.(hear)
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Phong/suggested/give/Mi/the answer /by the end / the week.
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It / good idea/have / quiet place / to study.
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With / whiteboard / the classroom / every student / can take part /lessons.
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There has been water on Mars.
Hearing that we had made progress, our teacher was relieved.
Phong suggested giving Mi the answer by the end of the week.
It is a good idea to have a quiet place to study.
With a whiteboard in the classroom, every student can take part in the lessons.