What’s your idea?–My opinion is _____, ______ happens, we should not stop the reform

When I first got to Harvard, my awkward English brought me great trouble.——Oh, dear, it _______a struggle for you to keep up with other students.

I grew up in Africa, at least I should say that I spent much of the first ten years of my life there

forestfire would have been discovered much earlier.

Has Tom finished his task yet—I’m not sure But he _____ on it last week