A
Have you ever wondered ( ) and ( )( )( ) developed?
when / how they were
( ) a ( )( )( ) the stationery products you have.
Take / close look at
They were originally invented overseas and ( )( ) in Japan.
further developed
( )( )( ) that the regular stapler was invented in France.
It is said
( )( )( )( )
as time goes on
Stationery companies tried to develop a stapleless stapler, ( )( )( )( )( ) extremely difficult.
which turned out to be
Documents ( ) without staples were ( ) to the ( ) at the meeting.
bound / distributed / delegates
The new model immediately impressed everyone ( )( ).
in attendance
This is more ( ).
economical
People often ( )( )( ) glue.
had difficulty using
It didn‘t ( )( ).
spread evenly
It ( )( ) if the cap was left off.
dried up
It ( )( ) the user’s hands.
stuck to
[ was / made / a Japanese stationery company / that / it] glue tape more user-friendly.
It was a Japanese stationery company that made
Glue ( )( )( ) the container ( ).
came out of / smoothly
It is hard to ( ) the ( ) of the glue.
optimize / adhesiveness
It became a ( )( ), ( ) over one hundred million ( ) in Japan alone.
big hit / with / sold
The tape now ( ) in ( )( )( ) of types.
comes / a wide variety
A researcher, ( ) by the coloring of autumn leaves, invented the special ink.
inspired
The ink changes color ( )( ) the temperature.
depending on
The ink needed to ( )( )( )( ).
meet several difficult requirements
It should not easily disappear ( ) used on paper ( ) leave a ( )( ) erased.
once / nor / trace once
This is the first erasable-ink pen ( )( ) heat.
utilizing frictional
It went ( )( ) in Japan.
on sale
It ( )( )( )( ) around the world ( )( ).
has been widely used / ever since