--Jim, did you take out the trash just now? --No. By the time I came home it .A. have been taken out B. had taken out C. had been taken out
—Are those your parents? —______. They are Bob’s parents.
—Where ______ my books, Mom? —I don’t know.
Look! This is ____ eraser. And _____eraser is my sister’s.
—________do you spell clock? —C-L-O-C-K.
— I ____ my ID card. I must _____ it.