_________that developed countries want to limit the development of the developing countries in the climate conference in Copenhagen.
—Which flight ________ ? —I want to catch the 13:00.
—You must have met him the other day. —Oh, no, I ________ .
— Have you ever worked with a tape recorder? — I ________ it a lot when I was studying French in school.
— I called you at ten, but there was no reply. —Oh, that was probably when I ________ a shower.
—Could you tell me how your father usually goes to work? —Yes. If it is fine, he ________ to his office.