Вставьте модальные глаголы can, may, must: You .... check your account carefully. You...

Question

Вставьте модальные глаголы can, may, must:
You .... check your account carefully.
You .... answer this letter immediately.
You ... .keep the documents more than 2 weeks.
… you lend me $10?
Leonardo Da Vinci was a student in Florence He ....draw, design buildings and write music.
You .... (not) park your car here.
This problem .... be solved.
Many different commodities .... serve as money.

… we translate the Protocol into Russian?
He .... be speaking on the phone

Answer 1

You must check your account carefully.
You can answer this letter immediately.
You Can`t keep the documents more than 2 weeks. 
Can you lend me $10?
Leonardo Da Vinci was a student in Florence He must draw, design buildings and write music.
You can`t park your car here.
This problem must be solved.
Many different commodities can serve as money.

May we translate the Protocol into Russian?
He may be speaking on the phone