Jim’s father was born _________ July 10th, 1981. So tomorrow is his birthday.A. in B. on C. at
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.
—What 's wrong with you? -- It’s
Ice-cream tastes _______, but it isn’t good ________ health.