Question

fil in the blanks with the form of tje verbs as instruted in brackets

They _________ their work .
(simple past of comlete )

(geeta __________ the lunch before the bell rang
(past perfect form of finish

Answer 1

They completed their work .

Geeta had finished the lunch before the bell rang.

Answer 2

The answers are:

(1) they completed their work. (Simple past of complete)

(2) Geeta had finished   the lunch before the bell rang (past perfect form of finish).

In both the sentences the verb form is used according to the instruction, which is complete-completed and finished< had finished.

Both the sentences are meaningful and is adhering to the rules of English Grammar.