You may leave the classroom when you ________writing.

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needn't; aren't allowed may not; are allowed mustn't; aren't allowed can't; are allowed

after before until but

To close Closing Closed Close

Making sure To make sure Being sure Make sure

To close Closing Closed Close

turn on turn down t

will; must can; can may; will may; shall

needn’t ; are allowed don’t have to; are supposed mustn’t ; aren’t allowed can’t ; aren’t supposed

can’t; are allowed mustn’t; aren’t allowed needn’t; are allowed needn’t; aren’t allowed

turn on turn off turn down turn right

can’t; are allowed mustn’t; aren’t allowed　　 needn’t; are allowed needn’t; aren’t allowed

unless on condition that though until

turn turns turning to turn

turn right turn left turn on turn off

mustn’t, are allowed don’t have to, are supposed needn’t, aren’t allowed can’t, aren’t supposed

mustn’t; are allowed don’t have to; are supposed needn’t; aren’t allowed can’t; aren’t supposed

turning; will leave to turn; leave turning; leave to turn; will leave

closing ; Certainly not to close ; Not at all closing ; Never mind to close , I don’t care