The question is ______can be put into practice.
Leave your key with your neighbor ________ you lock yourself out one day.(2012·辽宁)
A number of high buildings have arisen ________ there was nothing a year ago but ruins.(2012·山东)
—Do you have a minute?I've got something to tell you.—OK,________ you make it short.
—Have you got any idea for the summer vacation?—I don't mind where we go ________ there's sun,sea and beach.
It is hard for the Greek government to get over the present difficulties ________ it gets more financial support from the European Union.