1. Never do anything that interferes with your safety, no matter WHO tells you to.

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2. You were cleared to land. A touch and go might interfere with other traffic.

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3. Do what you are told with all due safety considerations. The Transport Canada study guide refers you to CARs 602.31 for this question.

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4. The controller wants you off the runway. Turning around takes too much time. If you really want to exit at a taxiway that is behind you, ask the controller for permission to "backtrack" to that taxiway. If the controller wants you to exit at a particular taxiway (maybe because the snowplow hasn't cleared the others) she will tell you by name which taxiway to exit at. "Turn right at Bravo."