Question

I ______ him only one letter up to now.

• A. sent
• B. shall send
• C. have sent
• D. none of these

Answer 1

Answer:

C. have sent

The phrase “up to now” indicates an action continuing from the past until the present.
So, we use the present perfect tense:

➡ have/has + past participle

• sent → simple past ❌

• shall send → future tense ❌

• have sent → present perfect ✅