You had saved the lives of hundreds of wild animals. Thank you for that.

Someone had cut down the oldest tree in the park. The police suspected Mike of doing it.

The factory had dumped tons of toxic waste into the river. It was heavily fined for that.

Since Mai had refused Nam's offer of a lift in his car, she had to walk home.

Sam had not worked hard enough in his previous job. He regretted it.

He had dumped lots of rubbish onto the beach. He denied it.

Tonya had dumped a lot of rubbish on the beach. She was strongly criticized for that.

'You've lied to us,' the villagers said. The politician denied it.

After she replaced all the light bulbs in her house with LED lights, she saved a lot of money on her electricity bills.

Denis had taken an active part in the Green Summer activities. He was rewarded for that.

Since the farmers used too much chemical fertilizer on their farm, they now have to drink polluted water.

After the students had learnt about the benefits of recycling and reusing, they started collecting waste paper, bottles, and cans to recycle and reuse.

I have seen him before. I remember that.