Have to/Must

Question 1

What is the structure for ‘I/You must (verb)’

Answer 1

Verb in ない form + drop い + ければ　なりません・いけません

Question 2

I have to clean my bedroom

Answer 2

私のしんしつをそうじしなければなりません

Question 3

Everyone, you have to bring a packed lunch tomorrow

Answer 3

みんなさん、あしたおべんとうをもって来なければいけません