The line graph ................. the average cost that American customers spent on mobile and landline phone services annually over a 10-year period.
illustrates / describes / analyses / shows
Overall, spending on residential phone services .............. ...................,
dramatically declined / sharply dropped down / speedily decreased
while popularity of mobile services .................... ................... throughout a decade.
increased sharply / rose significantly / went up steeply
Also, both of services met at the same record ......... ...................
in 2006
In 2001, spending on mobile phone services began by merely .........................,
$200
while the amount of annual expenditure on the residential phone services was around .............
$700
Over the following .................. ......................, expenditure on landline phone services gradually dropped below $600,
five years
whereas expenditure on cell phone services rose to just over ...........................
$500
....... ...................... cell phones overtook landline phones, and the services became equal in popularity with customers' annual expenditure of about $550.
In 2006
Then, cell phone expenses rose to approximately $750 .............. ...............,
in 2010
Meanwhile, spending on residential phone services experienced a steep fall in 2007 and went on to................ ....................... for the rest of the period.
steadily decrease / fell dramatically / dropped suddenly
