Question

Alex had his dinner after he ____ a. completed his work b. had been completing his work c. was completing his work d. had been completed his work e. had got completed his work

Answer 1

a. Competed his work

Answer 2

Alex had his dinner after he completed his work.

The above sentence is in simple past tense.

Simple past tense is used to depict an action that existed or happened before now. It is the basic form, action duration is not important as it can be in the distant past or recent past.

Certain time expressions are associated with a simple past tense that is:

Frequency - I sometimes ate those chips.

A definite point in time- we went to the mall last week

An indefinite point in time- when I was a child, I loved playing hide and seek.

Therefore, the above sentence uses an indefinite point in time.