We ________ study for the exams., don't need to, mustn't, don't have to, should, You ________ throw trash on the floor., must, have to, mustn't, should, You ________ throw trash in the bin., should, could, mustn't, shouldn't, I ________ waste food., can, could, mustn't, You ________ waste water., can't, can, should, We _________ take care of nature., don't need to, should, musn't, I _______ run fast., can to, must, can, should, Identify the mistake: I have brush my teeth every day., La oración está bien., La oración deberia empezar con "I don't have..", Al "have" le falta el "to", Identify the mistake: We should to save water at school., "At school" esta mal escrito, "should" no va con "to" solo "have to/ need to"", "should" deberia estar en negativo, Identify the mistake: I mustn't do exercise., La oración esta bien escrita pero debería ser "must" en afirmativo., La oración esta toda mal escrita., La negación deberia estar escrita "must not", A mustn't le falta "to".

Modal verbs practice

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