Jack is ________ honest man and we all find it ________ pleasure working with him．

a;/

an;/

a; a

an; a

Yellow Stone National Park, ________ in 1872, ________ over three million visitors every year, is America's first and foremost National Park．

establishing, attracted

having established, attracted

established, attracting

being established, attracting

Without this year's Nobel Prize in physics winner Charles Kao's idea of fibrotic(光纤的)communications, the “modern” telephone and Internet ________ impossible．

will be

were to be

should be

would be

________ my car is being made ready for a long journey．

In a moment

In the moment

For a moment

For the moment

There is much chance ________ Bill will recover from his injury in time for the race．

that

which

until

if

－Do you need any help, Lucy?

－Yes．The job is ________ I could do myself．

less than

more than

no more than

not more than

It was yesterday ________ I saw her and it was almost 10 o'clock ________ she arrived．

when, when

that, that

when, that

that, when

This is a very interesting book．I'll buy it, ________．

how much may it cost

no matter how it may cost

however much it may cost

how may it cost

What surprised me most was not what he said but ________ he said it．

in the way that

in the way

the way

the way which

A good story does not necessarily have to have a happy ending, but the reader must not be left ________．

unsatisfying

unsatisfied

to be unsatisfying

being unsatisfied