Help the hungry customer place a natural-sounding order at the restaurant by choosing the correct words for each gap.
"Hi there! We are finally ready _________________________ order. I'll have the grilled chicken, but could I get the sauce _________________________ the side? Also, my friend is allergic _________________________ shellfish, so please make sure there isn't any in her dish. When we finish, can we pay _________________________ card?"
The correct answers are to, on, to, and by.
ready to is followed by a verb (ready to order).
on the side is a fixed expression used when you want a sauce or dressing served in a separate little bowl.
allergic to is the correct preposition combination when talking about food allergies.
pay by is used with payment methods like card, credit card, or phone (but remember, we say pay in cash!).