MCQ Practice English 📖 By 2020, I ---- for this firm 15 years. A have worked B will be working C will have worked D will work Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up PreviousBefore my father ----- a house on the plot, paddy was grown here. NextBy the middle of the twenty first century, the computer ----- a necessity in every home.