If I ...... her address, I would write to her.

Understand the Problem

The question is asking which verb form correctly completes the conditional sentence regarding knowing someone's address. The options provide different tenses of the verb 'know', and we need to identify the appropriate one to use in this context.

More Information

The correct form is 'If I knew her address, I would write to her.' This structure is a second conditional sentence, which is used to describe hypothetical situations.

Tips

A common mistake is to confuse past simple with present perfect. Remember that second conditional uses simple past.

Sources

• If I ____ her address, I would write to her. - Grammar Quiz - grammarquiz.net