1) Write the sentence in passive: They plant many different crops in the soil a) Many different crops are planted in soil b) they crops plant in the soil 2) this sensor is checked/are checked every hour a) is checked b) are checked 3) People________(tell) when a volcano is dangerous a) are tell b) are told 4) Different scientific instrument_______(use) to collect data a) are used b) is used 5) People_____a loud sound in the volcano a) fell b) hear

Unit 11

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