A: Have you met Mrs. Jones yes?#
B: Yes, I have.#
A: When did you meet her?#
B: I met her two weeks ago.#
A: Has the boss left yes?#
B: Yes, he has.#
A: When did he leave?#
B: He left ten minutes ago.#
A: Have you had breakfast yet?#
B: Yes, we have.#
A: When did you have it?#
B: We had it at half past seven.#
A: Has she found her pen yet?#
B: Yes, she has.#
A: When did she find it?#
B: She found it an hour ago.&