What're your biggest goals for studying in this course? Why!
...
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
What kind of diagram is this?
process
Overall, spending on residential phone services .............. ...................,
dramatically declined / sharply dropped down / speedily decreased
Meanwhile, spending on residential phone services experienced a steep fall in 2007 and went on to................ ....................... for the rest of the period.