With the development of science, more new technology ______to the field of IT.
| A．has introduced | B．is being introduced | C．is introduced | D．was introduced |
.Who is making so much noise in the garden?
__ the children.
| A．It is | B．They are | C．That is | D．There are |
Four isof two.
| A．double | B．two | C．the two | D．the double |
Andeison entered the classroom, ____book in ___hand.
| A．×, his | B．×, × | C．a, × | D．a, the |
This is the short story that he has written.
A. three hundred and forty-fifth
B. three hundred and forty-fifth
She studies ___ medicine before she turned ___ writer.
| A．×; × | B．the, a | C．×; a | D．the; × |