We can energy in many ways. For example, turn off the lights when we don't use them.
A. save B. use C. get D. spend
I’m afraid he can’t use the new call phone .
A. probably B. especially C. naturally D. properly
There are many books for us to read. We can choose to star.
A. it B. that C. each D. one
I like traveling because I can always find interesting during the rip.
A. nothing B. anything C. something D. everything
The of printing helped to spread the knowledge.
A. invention B. experience C. decision D. reason
--- The model plane is wonderful! How did you make it?
--- It’s easy. Read the and you can do it too.
A. discussion B. instructions
C. experiment D. information
