. It’s not important __________ you may call it. What is important is __________ you make good use of it.

It has been two years          we left school.  

________ the civil service has its obvious advantages，it doesn’t necessarily suit everyone.

(2014·兰州高三质检)Our country is developing at an amazing speed，which is________makes me feel so proud.

I still doubt _____ he can overcome(克服) all the difficulties..