--- The population of China is really large!--- __________ We should take measures to control it.A. So it is.B. So he isC. So is it..
Some people think that CD-ROMs will soon be _________ books.
I didn’t _____ you were going to leave_____ 3 o’clock.
A human ______ can do some things better than a computer, for example, creating new ideas.
Alice ____ eat meat so that he can keep herself from getting too fat.
– What do you know about _______? -- Line drawings that show how something works.