1) A: Have you ever ridden a bicycle?
B: Yes,I have
A: When did you first ride one?
B : I rode one at summer canp
2)A: has Barbara come to see you?
B: Yes,she has.
A: What did you giver her to eat?
B: I gave her spaghetti and a french dessert.
3)A: Have you shown your new bag to your mother?
B: Yes,I have
A: What did she think of it?
B: She thought it looked splendid.
4)A: Have you mended your tape recorder yet?
B: Yes, I have
A:Who mended it?
B: My neighbor mended it.
