Some scientists believe that ________ is no doubt ________ a cure for AIDS will be found．

it; that

it; whether

there; that

there; whether

About four meters long, the room ________ a small reception hall．

served for

was served for

served as

was served as

The number of people who ________ access to their own cars ________ risen sharply in recent years．

has; has

has; have

have; have

have; has

She'll never forget her stay there ________ she found her son who had gone missing two years before．

when

where

that

which

No other countries could ________, nor could slaves ________ women．

join; or

join in; or

join; and

join in; and

Bad habits are not always easy to ________; it needs your determination．

remove

be removing

be removed

be moved

As

Which

It

What

Would you mind not picking the flowers in the garden? They are ________ everyone's enjoyment．

in

at

for

to

Up to now, the program ________ thousands of children who would otherwise have died．

would save

saves

had saved

has saved

First impressions are the most lasting．After all, you never get ________ second chance to make ________ first impression．

a; the

the; the

a; a

the; a