when is fog common?
summer end before thunderstorms The area was once underwater dry and hot It used to be covered by water never outer space under water
A B C D E F G H
Fog is common in the cold air ahead of the front.
fog is common before thunderstorms
when is fog common? (A) summer end (B) before thunderstorms (C) The area was once underwater (D) dry and hot (E) It used to be covered by water (F) never (G) outer space (H) under water