You ____ enter that room without a mask. There are dangerous chemicals inside. You ____ sit in a special seat. Any seat is fine. You ____ talk to anyone during the test. If you do, you will fail the test. She did very well on the last test, so she ____ take this one. You ____ look at your textbook during the test. It's not allowed. He ____ wear a suit. He can wear pants and a button-down shirt. She ____ bring any food into the testing centre. She can eat after the test.

Must not, can't, don't have to and doesn't have to

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