Passe compose and Imparfait usage

avec "le lundi"

• passé composé

• imparfait

avec "toujours"

• passé composé

• imparfait

avec "tout d'un coup" ou "tout à coup"

• passé composé

• imparfait

Which tense should you use in this sentence:
They were married for three years.

• Passé composé
• Imparfait

avec "soudain"

• passé composé

• imparfait

Which tense should you use in this situation?
When something was background information

• Passé composé
• Imparfait

Which tense should you use in this situation?
When you know the specific date or time something happened

• Passé composé
• Imparfait

Which tense should you use in this sentence:

She used to live with her mother

• Passé composé

• Imparfait

Which tense should you use in this sentence:
She was beautiful

• Passé composé
• Imparfait

Which tense should you use in this situation?
Almost always with the verb etre

• Passé composé
• Imparfait