Choose the correct alternatives to complete the sentences. 1. Students exam. 2. You 3. 4. She leave the room before the end of the lo く drive so fast. The police will stop you!…

Here are the correct alternatives to complete the sentences:

1. Students should not leave the room before the end of the exam.
2. You must not drive so fast. The police will stop you!
3. Should I switch off my mobile in class?
4. She practises the piano every day, but she has not learned to play for a long time.

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