Why don’t you try your best to get on the bus?—I tried to , but I could, it started moving

The railway Qinghai to Tibet is the longest plateau (高原) railway in the world.

It’s usually a common _______ that journal websites offer readers their free online editions of articles and other information.

The underlined letter “ a” in the word “______”has a different pronunciation from the others.

I can’t meet you on Sunday. I’ll be ________ occupied.