Choose all correct answers. You use the imperfect to describe...A.what you did yesterday.B.what you did at a specific moment in the past.C.the background conditions of an event (the weather, for example).D.what the people looked like at the party you went to last night.E.to talk about a habit in the past.

The correct answers are C. the background conditions of an event (the weather, for example), D. what the people looked like at the party you went to last night, and E. to talk about a habit in the past.

The imperfect tense is used to describe ongoing or incomplete actions in the past. It is often used to set the scene or provide background information for a story. For example, it can be used to describe what the weather was like, what people looked like, or what someone used to do regularly in the past.

On the other hand, the imperfect tense is not typically used to describe specific, completed actions in the past. Therefore, options A. what you did yesterday and B. what you did at a specific moment in the past are not correct. These would typically be described using the preterite tense.