I can meet you at eight o'clock; _____ you can call for me.

Living in a highly     society，you definitely have to arm yourself with modern technology and skills．

In the past ,the miners had to be extremely         to bear the uncomfortable conditions at mines.

There are many advantages to live on the top of a high-rise, one of which is that you can get a good ______.

He ____early the next morning, finding the brook______one foot.