There is _____800-meter-long road behind____ hospital.A. an, an B. an, the C. a, the
—What ________ to the boy a moment ago? —The knife cut his tiptoe.
—Do you teach ________ foreign languages? —Yes, I learn them on TV.
Jack _______ swim when he was five years old.
I think this problem is _______ that one.
Mrs Li is planning ______ Beijing with her cousin.