There is apple in the bag.A. a B. an C. one
He's busy________ English.A.learn B.learning C.to learn
Why________read books?A.not to B.don't C.not
Teachers taught us________many ways.A.in B.at C.from
Her studies in Middle School________coming to an end. A.am B.is C.are
We should help________ animals.A.protect to B.protecting C.to protect