After Ha had read some documents about Green Earth, she decided to join the organisation. (Perfect participles)

Since the farmers used too much chemical fertilizer on their farms, they now have to drink polluted water. (Perfect participles)

Sam had not worked hard enough in his previous job. He regretted it. (Gerund participles)

'You've lied to us,' the villagers said. The politician denied it. (Gerund participles)

A taxi was taking us to Hoi An Ancient Town. It broke down. (Reduce relative clause)

⇒ The taxi ________________________________________ broke down.

The Citadel gate was damaged in the storm. It has now been repaired. (Reduce relative clause)

⇒ The Citadel gate _____________________________ has now been repaired.

The capital city of Ecuador was the first city in the world that was declared a World Heritage Site by UNESCO. (Reduce relative clause)

⇒ The capital city of Ecuador was the first city _________________________________________________.

They visited this college in 2009,2012 and 2014. (three times)

I started learning how to play the piano eight months ago. I'm still learning it. (for)

Nam's still studying English. He started studying it two years ago. (for)