Подчеркните правильный вариант модального глагола в следующих предложениях: 1. Must/Can I have a biscuit please, Mum? 2. May/can you see anything in this inky darkness? 3. He must/can work systematically if he wants to know Fre...

Подчеркните правильный вариант модального глагола в следующих предложениях: 1. Must/Can I have a biscuit please, Mum? 2. May/can you see anything in this inky darkness? 3. He must/can work systematically if he wants to know French well. 4. Must/May I borrow these files for a moment, sir. 5. Have to/may I come in? 6. He can/must not speak English yet. 7. I will be able to/can pass my exam.