With the help of computers, people will find it easier to keep the traffic smoothly.

“We can’t go out in this weather，”said Bob，________out of the window.

’t like Aunt Lucy, who _____without warning and bringing us presents

sn’t know what to say, for it is thefirst time that he ______ with a girl

y countries, government reports,legal papers and most business letters are the main situations _______ Englishis used