Can you please check these sentences I'm doubtful about? Thank you.

1)Can you dress the Christmas tree with festoons?
2) hall we go to the cinema? I'd rather stay at home./I'd prefer to stay at home.
3)I'd like (a?) grilled chicken breast, (a) home-baked rasperry cake.
4) Would you like anything to drink?
For Christmas dinner I had (Or: On Christmas day I had pasta for dinner?)
They are leaving from London at (leaving London?)
5)I had typical southern Italian specialities.

1) Would you decorate the Christmas tree with ornaments and lights?

2) OK

3)I'd like a grilled chicken breast and a piece of home-baked raspberry cake.

4) Would you like anything to drink?
For Christmas dinner, I had pasta.
They are leaving from London at (leaving London?) [Either phrasing works.]

5) I had typical southern Italian specialties.

Sure, I can check those sentences for you. Here are the corrections and explanations of each sentence:

1) Can you dress the Christmas tree with festoons?
- This sentence is grammatically correct. "Dress" is often used when referring to decorating a Christmas tree. Festoons are a type of decoration that can be used to decorate a tree.

2) Shall we go to the cinema? I'd rather stay at home. / I'd prefer to stay at home.
- Both of these sentences are grammatically correct. "Shall we" is a more formal way of suggesting an activity, while "I'd rather" and "I'd prefer" both convey a personal preference for staying at home.

3) I'd like a grilled chicken breast and a home-baked raspberry cake.
- To make this sentence grammatically correct, you should use the article "a" before both "grilled chicken breast" and "home-baked raspberry cake." This is because you are referring to one of each item.

4) Would you like something to drink?
- This sentence is grammatically correct. However, you might consider using a more specific term instead of "something." For example, "Would you like water/juice/tea/coffee/any specific beverage to drink?"

For Christmas dinner, I had pasta. (Or: On Christmas day, I had pasta for dinner.)
- Both of these sentences are grammatically correct, and you can choose the one that sounds better to you.

They are leaving London.
- This sentence is grammatically correct. "Leaving London" is a common way to phrase a departure from the city.

5) I had typical southern Italian specialties.
- This sentence is grammatically correct. "Specialties" is the correct spelling, and "typical southern Italian" describes the type of food you had.