Составьте утвердительные, вопросительные и отрицательные предложения с подмогою модальных глаголов must,can,may,

1). I must come back home at 4 oclock in the evening to have a skype lesson with my teacher of English.

2). You must not come back home late because you are a little boy.

3). He must come back home at 21.00 pm, mustnt he?

4). Can my brother come back home a little earlier to see the movie?

5). My father cannot come back home at 16.00 pm, because he works until 18.00 pm.  

5). She can come back home if she realizes her mistake.

6). May I have lunch with you?

7). He may have lunch with our family.