Hurry up！The train________.You know it________at 8∶00 am.

___ has already been pointed out is that grammar isnot a set of dead rules.

I think it’s impossible for us to work out the plan in just two days. It’s too difficult.—-You’re right. We can’t be _______ careful and hard while working on it.

By the year of 2053 there will be 487 million aged people in China， means that one third of the population will be over 60.

To their disappointment, two thirds of the milk ______ bad. [ ]