Special attention should be paid ________ our earth from ________．

to prevent; being polluted

to prevent; polluting

to preventing; being polluted

to preventing; polluted

Knowing how long the test would last, the students who finished ________ back and waited until the end of the exam．

settling

settled

settle

to settle

Large quantities of information, as well as timely help, ________ since the organization was built．

has　been offered

had been offered

have been offered

is offered

Such a great event ________ that it attracted governments and people from across the world to Shanghai．

was World Expo 2010

World Expo 2010 was

has World Expo 2010 been

World Expo 2010 has been

She collected ________ I did for the Hope Project the other day．

three times as many money as

three times much money than

three times more money than

three times many more money

The editor's job is to keep the newspaper ________ and ________ to the readers．

balanced; interested

balancing; interesting

balanced; interesting

balancing; interested

Your house is always so neat－how do you ________ it with three children?

manage

serve

adapt

construct

Many lifestyle patterns do such _________ great harm to health that they actually speed up ________ weakening of the human body．

a;/

/; the

a; the

/;/

It’s the second time that I _________ in Beijing．What great changes! It’s years since I _________ here last time．

went; had left

had been; left

have been; left

have; had left

In order to change attitude _________ employing women, the government is bringing in new laws．

on

of

for

to