When one door of happiness closes, another opens; but often we look ________ long at the closed door ________ we do not see the one that has been opened for us．

so; that

so; as

as; as

such; that

There was an oil painting ________ in the corner．It ________ there for several days．

laying; had laid

lain; had laid

lying; had lain

laid; had been lain

Although he is young, David has gained ________ rich experience in ________ society．

the; the

a;/

/;/

/; the

The British people and the American people not only speak the same language but ________ a lot of special customs as well．

share

spare

hold

carry

He is such a lazy man ________ nobody wants to work with ________．

as; him

that;/

as;/

whom; him

In only fifty years, English has developed into ________ language the most widely ________ in the world．

a; speak

the; spoken

a; speaking

the; speaking

You can never imagine what great difficulty I had ________ the solution to this problem．

found

finding

to find

for finding

Everyone fails now and then．It is how you react that makes a ________．

idea

point

progress

difference

Last month, part of Southeast Asia was struck by floods, from ________ effects the people are still suffering．

that

whose

those

what

The population problem ________ the attention of the whole world．

calls at

calls on

calls for

calls in