The science of computer, _____rapid progress has been made in recent years, is the most important of all science.
Here was a nice little present for everyone, with a suitable poem ________ to it.
________ no point in beating around the bush. Let's ________.
—You didn't wait for Mr. Smith last night, did you?—Yes, but we ________. He didn't return home at all.
I remember a _____ famous scientist said that we should believe in ourselves first of all.
The Columbia has finished the task in the International Space Station and is reported to come back to the earth tomorrow, or to be more _____ , at 3:32p.m. local time.