It is _____Tom often breaks the school rules _____makes his teacher unsatisfied with him. [ ]

He reminded me of what I should ______ haveforgotten.

The rivers will become dirtier and dirtier _______ we take action to protect them.

The policeman stopped him when he was driving home and_____ him of speeding.

ire______attheNationalExhibitioninLondon,atleasttenpricelesspaintingswerecompletelydestroyed.