Ответ:

Решение:

Модальные глаголы: might, must, could, should, needn't, need, mustn't, can't, don't have to, may.

  1. We must to decide who will be class president.
  2. You mustn't do all your homework today, you can finish it tomorrow.
  3. I didn't see Lyn today, she may have taken the day off.
  4. “May I leave early today, please?” Sarah asked.
  5. Kate looked pale in the doctor's office. She might be ill.
  6. “Could you move over a bit so I can sit down, please?” he asked.

Ответ: must; mustn't; may; May; might; Could.