____ Helen’s knowledge and vocabulary expanded, she asked more and more questions. 

 I was walking along the road _____ someone patted me on the shoulder from behind.

It ____in this new hall ____ was just set up last month ________ we held an important meeting yesterday.

The research results show that the earth goes a little faster ______it is closer to the sun.

Make decisions right away, ______ you’ll miss a golden chance.