Question

If I knew her address, I.............. a letter to her.

• A. wrote
• B. could written
• C. could write
• D. could have written

Answer 1

Answer:

C. could write

1. wrote ❌ (simple past – not correct for Type 2 conditional main clause without "would/could")

2. could written ❌ (grammatically wrong — "could" must be followed by base verb, not past participle)

3. could write ✅ (correct — "could" + base verb "write")

4. could have written ❌ (used in Type 3 conditional for unreal past, not matching "knew" in Type 2 sense)