A) We (tallk) when my sister (come) into the room. b) Jack (not / work) yesterday. c) Students (write) the test now. d) When I (make) the cake, I (drop) the bowl. e) My granny always (сook) lunch for me. f) While you (watch) TV, I (clean) the kitchen. 1. Wrlte the sentences.
a) Tom / do / his homework / when / his friend / come. b) They / not / play / tennis / now. c) Helen / like / walking the dog?

A) We were talking when my sister came into the room.
Solution: This sentence is in the past tense. "We were talking" is the past progressive form which indicates an ongoing action in the past. "Came" is the past simple form which is used for a completed action in the past.

B) Jack did not work yesterday.
Solution: "Did not work" is the negative past tense form. "Work" is the base form of the verb because it is used with the auxiliary verb "did" to form the past simple tense.

C) Students are writing the test now.
Solution: "Are writing" is the present continuous tense. It indicates an ongoing action in the present. "The test" is a specific test being referred to.

D) When I made the cake, I dropped the bowl.
Solution: "Made" is the past simple tense because it refers to a one-time completed action in the past. "Dropped" is also the past simple tense and it follows the same logic.

E) My granny always cooks lunch for me.
Solution: "Cooks" is the present simple tense used to describe a habitual action or a general truth. "Always" adds emphasis to the regularity of the action.

F) While you were watching TV, I cleaned the kitchen.
Solution: "Were watching" is the past progressive tense used to describe an ongoing action in the past. "Cleaned" is the past simple tense referring to a completed action in the past.

1. Write the sentences.
a) Tom was doing his homework when his friend came.
b) They are not playing tennis now.
c) Does Helen like walking the dog?
Solution: The additional information is written in the correct tense according to the original sentences. In sentence a), "was doing" and "came" are in the correct past tense forms. In sentence b), "are not playing" maintains the present continuous tense and "now" is added to specify the time. In sentence c), "Does Helen like" is in the present simple tense to form a question.