дам 55 балловпомогите пожалуйста нужно воткнуть can,could,must,mustn039;t,have to,dont039; have

E.-What are you doing?

A.- I'm doing my maths honework. I couldn't do it last night because i was tired

E.- You mustn't do your homework now. We'll be late for school.

A.- But I have to finish it.

E.- Oh,Ok. Can I help you?

A.-No,dont worry. you don't have to help me. I'll be ok

e.- You re my friend. I want to help you.  

a.- Well, i ve done these questions but this one is difficult. I can't do it.

E.- I had problem with that question too. I couldn't do it last night but I suddenly knew the answer this morning.

A.- Great! Can you show me how to do it?

E.- Sure. But we must go now . We can't be late.

A.- Thanks Emma

Пожалуйста,очень безотлагательно

E.-What are you doing?

A.- I'm doing my maths homework. I couldn't do it last night because i was tired

E.- You mustnt do your homework now. We'll be late for school.

A.- But I have to finish it.

E.- Oh,Ok. can I help you?

A.-No, dont worry. You dont have  to help me. I'll be ok

e.- You re my friend. I want to help you.

a.- Well, Ive done these questions but this one is difficult. I cant do it.

E.- I had problem with that question too. I couldnt do it last night but I suddenly knew the answer this morning.

A.- Great! Can you show me how to do it?

E.- Sure. But we have to  go now . We mustnt be late.

A.- Thanks Emma