1) Last week, we ______ the beach. a) cleaned b) ran 2) The school ______ paper, glass, and plastic last month. a) recycle b) recycled 3) My family______ old bottles to make flower pots. a) cared b) reused 4) Students _____ garbage from the beach. a) protected b) picked up 5) We ______ to school instead of using the bus. a) left b) walked 6) Our families _____ energy. a) protected b) saved 7) Volunteers ______ the sanctuary. a) protected b) teach 8) The children ______ ten new trees in the garden. a) planted b) planting 9) People ______ the air clean. a) kept b) collected 10) Someone ______ trash into the river. a) threw b) throw 11) Tourists didn't ______ plastic bags on the beach. a) left b) leave 12) The teacher ______ us how to care for the environment. a) warned b) taught 13) Many students ______ about endangered animals. a) cared b) caring 14) Yesterday, I ______ a lot of sea birds. a) seen b) saw 15) The workers ______ under the trees a) chose b) slept 16) We ____ local vegetables. a) eaten b) ate 17) People ______ clean water from the river. a) drank b) drunk 18) The polluted river ______ a serious problem. a) became b) become 19) Students ______ action to protect the ocean. a) took b) cared 20) The children ______ to the park to join the cleaning campaign. a) taught b) ran

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