Our English teacher devoted herself _____to her teaching and it earned her a good reputation in our school[ ]

I was trying to carry out the plan, but I failed.—Well, you _____, for we were uncertain it would do ____.

________ for the fact that she broke her leg,she might have passed the exam.

Why not talk with your parents about your willingness to attend Peking University Summer Camp?—I tried __________to get them to listen to me

I bought this shirt for 35 yuan yesterday—It’s on sale today for only 29You should have waited—Oh, really? But how ________ I know?