He found his son _______ inside the lift, _______ very worried.    

Millions of people watched that first moon landing on television, their hearts in their mouths, aware of how difficult and dangerous an adventure it was, and what risks had to be ____. 

________ in a recent science competition, the three students were awarded scholarships totaling $ 21, 000.

_______ out from his company, he had to find a new job.

I never thought of it before, _______ all that my parents had done for me for granted.