The science of computer, _____rapid progress has been made in recent years, is the most important of all science.
Having been attacked by terrorists,________.
We must know what we should do and what we should avoid ______a good impression on others in public place.
.—Well, Kate, I’m sorry, but I have to leave. ---_____. I hope to hear from you soon.
.As you the town, the first building you see is the church.
—How did you find the talk this morning? —______.