补全对话。
A: _____ do you make a chicken sandwich?
B: _____, put the mayonnaise on a slice of bread．
A: And then?
B: Cut up an onion and a tomato. Add these _____ the sandwich.
A: What do you do next?
B: _____ some lettuce and the chicken slices on the sandwich. Put the relish on the chicken.
A: And _____, Put another slice of bread on the top.
B: Yes, you are right.