Question

Fill in the blank with the most appropriate word.
I spoke to her _______ the phone last week.

• A. at
• B. like
• C. on
• D. by

Answer 1

The correct option is C on

Answer : D

Prepositions are words that indicate relationships with the other words in the sentence, and quite often they tell us about then "when" and "where" aspects.

Let's look at what the various alternatives mean:

• at : It is used to a precise & small location / event
• like : It means "similar to" / having similar characteristics or qualities
  
• on : It is used to refer to a surface / public transport / TV / Radio / Internet / Map / Farm / Island / Holiday
• by : It is used to "not later than" / at or before / to identify the agent performing an action

By reviewing the usages of various alternatives, it is clear that "on" is the most appropriate word.

Thus, the correct complete sentence is:

I spoke to her ON the phone last week.