Directions: Choose the sentence which makes appropriate use of verbs given in the brackets.
He (work) on this project for three months now.
1
1. He (works) on this project for three months now.
2
2. He (is working) on this project for three months now.
3
3. He (has been working) on this project for three months now.
4
4. He (worked) on this project for three months now.