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 |
I was surprised by his words ,which made me recognized ______silly mistakes I had made .
| A．what | B．that | C．how | D．which |
_______was last night ______I read about the history of English.
| A．This ,when | B．It ,since | C．It .that | D．It ,before |
Thousands of foreigners were______ to the Shanghai World Expo the day it opened.
| A．attended | B．attained | C．attracted | D．attached |
My father made me a promise ___ he would buy me a present if I got a good mark
| A．when | B．which | C．that | D．if |
I have finished translating a large part of the book, but the rest ___ more difficult.
| A．is | B．are | C．was | D．were |