- Find more exercises on: www.english-friends.net &. - www.free-exercises.com. - Find more worksheets on: www.kopiervorlage.com , www.arbeitsblatt.at , www.arbeitsblatt-erstellen.de. - Fill in the right form of the modal verb “can”:. - Fill in the right form of the modal verb forms “could” or “to be able to”. - “able to you with your problem (to help) 2. - “able to. - “able to”: They at home alone. - “could”: I what you said! (not to hear)
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