He was a bit nervous. He _________his spare breath with a soft sound that was almost heard by the audience.

As I ________the house，I noticed a light upstairs. 

 American women were______ the right to vote until 1920 after many years of hard struggle.

(2014·安徽皖南八校三联)A positive attitude，________with willingness to seek appropriate help and exercising solid study habits，will do much to determine how well you do in your studies.

Many single parents      with the dilemma of dividing time between work and children。