—Why does the lake smell terrible ?

  --because large quantities of water ____.

 A. have polluted  B. is being polluted  C. has been polluted  D. have been polluted

Women______-drink more than two cups of coffee a day have a greater chance of having heart disease than those _______- don’t.

A. who; /              B. /; who                     C. who; who         D. /; /

 The seaside here draws a lot of tourists every summer. Warm sunshine and soft sands make ___________it is.

A. what         B. which               C. how                 D. where

.I don’t mind her criticizing me ,but____is how she does it that I object to .

A.it    B.that   C.this   D.which

It’s the first time that he has been to Australia ,______?

A.isn’t he         B.has’t he       C.isn’t it        D.hasn’t it

 When we visited my old family home, memory came_____back.

A.flooding  B.to flood     C.flood    D.flooded

With so many orphans_______, the charity organization calls for more donations.

A.to look after  B.being looked after  C.to be looked after  D.looked after

The police have offered a large _______ for information leading to the robber’s arrest.

A. prize                 B. compensation            C. price                        D. reward

 It is surprising that Jack, who is only 39 years old, _______ in the field of engineering for 20 years when he entered the company last month.

       A. worked           B. had worked         C. has worked        D. working

 It is said that Chinese students tend not to challenge authority or _____different opinions and prefer to accept other’s views.

 A. speak    B. distinguish    C. say    D. air