________，Carolina couldn't get the door open.

A．Try as she might B．As she might try

C．She might try as D．Might as she try

I have a tight budget for the trip，so I'm not going to fly ________ the airlines lower ticket prices.(2012·上海，32)

A．once B．if C．after D．unless

One's life has value ________ one brings value to the life of others.(2012·江苏，30)

A．so that B．no matter how

C．as long as D．except that

You can borrow my car ________ you promise not to drive too fast.(2012·江西，31)

A．unless B．even if

C．in case D．as long as

(2012·福建，30)It is hard for the Greek government to get over the present difficulties ________ it gets more financial support from the European Union.

A．if B．unless C．because D．since

—Have you got any idea for the summer vacation?

—I don't mind where we go ________ there's sun，sea and beach.

A．as if B．as long as

C．now that D．in order that

—Do you have a minute？I've got something to tell you.

—OK，________ you make it short.

A．now that B．if only

C．so long as D．every time

A number of high buildings have arisen ________ there was nothing a year ago but ruins.(2012·山东)

A．when B．where C．before D．until

Leave your key with your neighbor ________ you lock yourself out one day.(2012·辽宁)

A．as long as B．even though

C．in case D．as if

—Did you return Fred's call?

—I didn't need to ________ I'll see him tomorrow.

A．though B．unless C．when D．because