The Chinese built a lot of wonders, ________ was the Great Wall．

one of which

which

of them one

one of them

No one answered the front door, so the man tried ________ at the back door．

knocking

to knock

knocked

being knocked

He is the only one of the boys who ________ the answer．

know

have known

knows

had known

－Tell us all things ________ you know．

－The only thing ________ I can tell you is that you will be punished．

that, that

which, which

that, which

which, that

E-mail, as well as telephones, ________ an important part in daily communication．

is playing

have played

are playing

play

It used to be a small village ________ what it is now．

compared with

compared about

compare to

compare with

I don't like the way ________ you laugh at her．

that

on which

which

as

I'd like you and your brother ________ supper with us tomorrow．

are going to have

are having

having

to have

The camera is ________ expensive ________ I can't afford it．

so, that

such, that

so, as to

enough, that