She _______ a lot of CDs yesterday.

Grammar Rule: Past Simple

The Past Simple tense is used to talk about actions that happened and were completed in the past. The word 'yesterday' clearly indicates a completed action in the past.

Solution:

The sentence refers to a completed action that happened 'yesterday'. Therefore, the Past Simple tense is required. The correct form for the Past Simple of 'buy' is 'bought'.

• has bought - Present Perfect (used for actions that have a connection to the present, or happened recently)
• bought - Past Simple (used for actions completed in the past)
• has buy - Incorrect grammar
• buys - Present Simple (used for habitual actions or general truths)

Ответ: bought