Could you tell me if this is a correct sentence ?
Teacher asked us to check that we had made mistakes in the exercises alone.

check that Or check whether?!

Thanks:)

Question

Could you tell me if this is a correct sentence ?
Teacher asked us to check that we had made mistakes in the exercises alone.

check that    Or    check whether?!

Thanks:)

Answer

Hello Sophie,
Your sentence sounds a little strange, like the teacher wants you to make sure you have mistakes in your work!
I think I would say something like 'The teacher asked us to check our own work to make sure there were no mistakes'

Hope this helps

Bob

Answer

Our teacher demanded us to check the mistakes which had been made in the exercises by ourseves. may be better.