I3 U5 G1 G2
Help
By the time the Chinese (experiment) with kites 2,500 years ago, animal flight (exist) for millions of years.
By the time the Chinese experimented with kites 2,500 years ago, animal flight had existed for millions of years.
Long before the Chinese (start) flying kites, early humans (try) to imitate birds.
Long before the Chinese started flying kites, early humans had tried to imitate birds.
The Chinese (use) kites for measuring and signalling before people (try) to use them for transportation.
The Chinese had used kites for measuring and signalling before people tried to use them for transportation.
Unlock this slideshow and over 2 million more with Baamboozle+
Try slideshows
Your experience on this site will be improved by allowing cookies.
Allow cookies