________ is known that Tom wants to visit ________ they call “the paradise(天堂)”some day if he can afford it．

A．As; that

B．It; what

C．It; that

D．As; which

He left the place, ________ never to come back．

A．determined

B．having determined

C．being determined

D．to determine

My parents let me have my own ________ of living．

A．way

B．method

C．manner

D．fashion

－I’m green at everything．

－Don’t worry．________ you get older, you will get more experience．

A．As

B．Till

C．If

D．While

After I covered sixty kilometers that day, my leg under me ________．

A．gave in

B．gave off

C．gave out

D．gave away

In the dream Peter saw himself ________ by a fierce wolf, and he woke suddenly with a startle．

A．chased

B．to be chased

C．be chased

D．having been chased

________ most of the earth’s surface is covered by water, fresh water is very rare and precious．

A．As

B．Once

C．If

D．Although

See the flags on top of the building?That was ________ we did this morning．

A．when

B．which

C．where

D．what

________ environmental damage is done, it takes many years for the ecosystem(生态系统)to recover．

A．Even if

B．If only

C．While

D．Once

I just wonder ________ that makes him so excited．

A．why it does

B．what he does

C．how it is

D．what it is