Question

correct form of verb
(i) When he entered my room, I_______( write)
a letter.​

Answer 1

Answer:

wrote.....................................

Answer 2

In Past Continuous Tense 'Was / Were' is used in sentence and 'Ing' is added with first form of the main verb. 'Was' is used with 'I' and third person singular subject.

So,

$\huge{\underbrace{\ Answer:-}}$

(i) Was writing

Complete sentence = When he entered my room, I was writing a letter.