Let‘s go and---them in that shop

Let‘s go and___them in that shop
B:happy birthday to you.A:thank you.B:will you have a birthday____?yes,I want a birthday____and some candles.Let's go and ____them in that shop.can i heip you?yesplease.I want a……C:Here it is .A:____is it?……整篇文章如上，希望网友认真结合题意答题。