“What are you doing , Amy” “I want to ________ these pictures on the wall.”

There are only five students in the classroom.Where are_____

Are you satisfied with the result of the match–No! I can’t have ______.

I think there will be ______pollution and ______ carsin the future.

（2017·北京）In the 1950s in the USA, most families had just one phone at home, and wireless phones _______yet.