1.

What was Rita invited to do?

  to have tea.
  to have lunch.
  to have dinner.

2.

Who invited Rita?

  Lucy's teacher.
  Her teacher.
  A friend.

3.

If you are invited to dinner at a friend's home...

  you have to bring the food.
  the custom is to bring a small gift.
  he/she will give you a small gift.

4.

If you want to bring a friend along ...

  call first and ask if it's OK.
  bring some flowers.
  bring some dessert.