This is ________ apple. It’s ________ green apple. A. a, an B. an, a C. an, an
Don’t trouble trouble ________trouble troubles you.
Justin Bieber is ________ singer that young people are crazy for him.
— I didn’t hear you come in just now.— That’s good. We tried ________ any noise.
________ the plane was missing for several days, ________ people didn’t give up.
— You look so tired.— ________ I ran for two hours.