I was wondering what to do and＿＿＿＿＿＿Mr. Wang came in. 

_____, he together with his families ____ escaped from the shaking building when the earthquake struck Lushan County of Ya’an.

(2013·高考浙江卷)If we leave right away，________we’ll arrive on time.

We should ________ adjust ourselves to the development of our society.

My computer is ________ in need of repair because it does not work at all.