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c. Have Ss Look at the pictures on the page. d. Play the tape a few times and have Ss practice along with the tape. e. Put Ss into pairs and have them act out the dialogues. Step four : Sumup. Step five:Writing on blackboard. Which is the cheapest notebook? The green one. Which is the best? The blue one, of course. longest. cheapest. best. hottest. shortest. most expensive. worst.