_________ the math problem is difficult, I’ll try hard to work it out.A. When B. Though C. Before
He had to do something________his own life.
—I always get nervous before________big exams. —You could take a walk.
The film made by Walt Disney________all over the world.
They were________in that________sport.
如果你坚持练习英语口语,你很快就会取得很大的进步。 If you keep(on)________,you’ll soon make great progress.