—When can I use your computer?—Never! ________should you touch it. 

Wind is now the world’s fastest growing ________ of power.

(2013·天津，7)While she was in Paris，she developed a ________for fine art.

Mr. White is a careful and experienced engineer, so he is often        to finish some challenging tasks.

—How much did the guy ________ you to fix your 3G mobile phone?—I don’t remember，but it was quite a lot.