Read the sentence and choose the right time marker. Sue was doing a project work on the topic "My favourite animal"

The sentence is in the past continuous tense, indicating an action that was in progress at a specific time in the past. The options provided are time markers. The most appropriate time marker that fits the past continuous tense and implies a duration or a specific point in the past is 'yesterday from 7 pm till 9 pm.' This option specifies a period during which the action was ongoing. 'Last Sunday' is a point in time, and 'yesterday' is too general without a specific time frame. Therefore, 'yesterday from 7 pm till 9 pm.' best completes the sentence to indicate a continuous action in the past.

Answer: yesterday from 7 pm till 9 pm.