Hardly could he ____________ this amount of work in such a short time.

Years later, he returned home, unexpectedly the old tree of his childhood__________.

ys, many people walk to work ________Copenhagen Conference calling for living a low-carbon lifestyle to deal withglobal warming.

Does Bob ______ a tennis ball —Yes, he______

Your sister nearly _______ all her spare time to her study during the three years. —-That’s right， or she ________ the first place in her school in the College Entrance Examination.