5. If it (not / rain) ________, I would go out with
you.
6*. When I (listen) ________ to music, I heard an
explosion outside the door.
7*. I (study) ________ English for six years.
8*. When I (finish) ________ my homework, I
went out last night.
Bạn đang xem 5. - UNIT WORLD POPULATION