There are some words_______can cross countries and cultures,such as“OK”.“Huh’’and“mama”.A.what B.which C./
Helen is 15 years old, and Joan is 15, too. So Helen is ____ Joan.
—What ____ news! —Yes, all of the children were ____.
New York is one of ____ in the world.
Do you have difficulty ____ English?
—I don't know much about computer. —I don't know, ________. Let's go and ask for help.