[单项选择]Up to now, the work has been easy.（　）
A. So
B. So long
C. So far
D. So that

[单项选择]Up to now, the work has been easy.（　）
A. So
B. So long
C. So that
D. So far

[单项选择]A research center has been set up in this country.（　）
A. praised
B. established
C. reformed
D. criticized

[单项选择]The fishing boat that has been tied up at the pier for three days ______ finally on its way this morning.
A. was
B. were
C. is
D. are

[单项选择]Williamsburg has now been restored so that it looks as it ______ during the 18th century.
A. could
B. would
C. was
D. did

[单项选择]______ work has been done to improve the people's living standard.
A. Many B. A great many C. A large number of D. A great deal of

[简答题]This self-defeating warning has now been removed, but its message is still very much to the point.

[单项选择]—They haven't finished the work up to now.
—Well, they ______.
A. should
B. should have
C. would
D. must have

[单项选择]Now I must work twice as hard to catch up with others.（）
A. 我现在必须花两倍的时间，为的是赶上别人。
B. 我现在必须加倍努力，与别人保持同步。
C. 我面对双重困难，依然不落后他人。
D. 我现在必须加倍努力才能超过别人。

[单项选择]It has been proved that（）up smoking and（）more vegetable can help you to avoid cancer.
A. give; eat
B. giving; eating
C. gave; ate
D. given; eaten

[单项选择]There is no rush now, for the game has been（　）.
A. taken off
B. made out
C. called off
D. switched

[单项选择]The house I grew up （）has been taken down and replaced by an office building.
A. in it
B. in
C. in that
D. in which

[简答题]It has been a tumultuous time for dot-com start-ups. In fact, Gartner, Inc.estimates that over 75% of e-commerce start-ups will end in failure. (71) While it is tempting to blame prevailing market conditions for this failure rate, the fact is that early planning ultimately determines the potential success or failure of a start-up. This whitepaper helps managers understand the characteristics that contribute to successful start-ups. (72) Importantly, this work also includes a valuable diagnostic survey that helps entrepreneurs quantify the strength of the business and identify problem areas. One thing is clear: There are a lot of ways for a new business to go out of business. (73) Loss of focus, an inability to fulfill customer orders or service, and a mismatch of top management with the corporate culture are but a few common reasons that businesses fail. To increase the chances of success, managers need to consider four crucial inputs: Management/People: The single most vita

[填空题]How many years has she been married？
She has been married （）.

[填空题]The building of the bridge has been _____ up by the heavy rain.

[单项选择]Many countries are now setting up national parks ________ animals and plants can be protected.
A. when
B. which
C. whose
D. where

[单项选择]For some time now, ______ has been presumed not to exist: the cynical conviction that everybody has an angle is considered wisdom.
A. rationality
B. flexibility
C. disinterestedness
D. insincerity