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