If you are _______ about Australian cities, just read the book by Dr. Johnson, which introduces them in detail.      

____hard ,and you will make greater progress.

His _____ expression suggests that the news he read just now must be _____.

It is _____ that Professor Smith will give us a lecture tomorrow.

. All the students were____ when they heard the_____ news.

.Because of the snow, the village was not ___________ by car.

When we plan our vacation , mother often offers______suggestions.

I tried hard to get some information about the new technology from him, but he remained ______.

—What was his performance like?
—Oh, it couldn’t have been___．

—Were you all frightened at the sound of the fire alarm?
— No. Everyone stayed _______ and obeyed the police.