That’s what I call those words like “to” “of” at” and other ones like it. You can see them at the top of that slide, and students need to shout out the answer.
The trick is to make it fun. Try dividing your class into teams or small groups and having them shout out the answer or raise their hands. You can put a point system in place and really kill some time. Oh, and students learn grammar too, see:
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