Read the following passage and choose the best option for each blank.

Hi Susan,

What are you doing these days? Last Saturday our school (21) _________ a clean-up project. We collected rubbish that people threw in the river. It was a fantastic day. Many people such as teachers, students and their parents, (22) _________ and worked hard. We picked up lots of plastic bottles, food packets and drink cans. We put the rubbish into the bags and boxes, (23) _________ the teachers carried them to a truck, which then took the rubbish to the recycling centre. In the afternoon, we listened to Professor Leslie Cook giving a talk about some easy ways to be green. For example, you shouldn’t leave your electronic devices on standby when you go to sleep. All those little red or green lights consume more energy than you think. You can also (24) _________ the heating and put on a jumper or have shorter showers to save water. And guess what, I’m going to Costa Rica in July. It’s all arranged. I (25) _________ on a turtle conservation project on the west coast. It will definitely be hard work – but so interesting. I can’t wait for it. How about you? Does your school have any projects for the environment?

Write back soon.

Elizabeth