Select the most appropriate option that can substitute the highlighted segment in the given sentence. If there is no need to substitute it, select ‘No substitution required’.
Which movie have you watched on television when I called you?

Correct option is A

The correct substitution of the highlighted words is (a) were you watching.
�� Explanation:
· The sentence describes an ongoing action at the specific point of past time “when I called you.”
· For such situations, the correct tense is past continuous (was/were + V1 + ing).
· “Have you watched” is present perfect, and doesn’t fit with a specific past time reference.
Correct sentence:
Which movie were you watching on television when I called you?
✅ Grammatical Rule Used:
· Use past continuous for an action that was in progress when another past event occurred.
· “When + past simple” + “was/were + V-ing”
Example:
· I was reading a book when the lights went out. ✅
�� Grammar Booster:
�� Combine past simple with past continuous to show interruption or ongoing action at a point in the past.