Question

He _______ a book these days.
a. was writing
b. has been writing
c. is writing
d. had written​

Answer 1

He is writing a book these days.

Answer 2

Answer:

He is writing book these days.

Explanation:

While doing such questions read the question carefully. Here "these days" is given so it cannot be past tense (was writing and had written) and has been writing doesn't fit properly.

There are three kinds of tense.

1. Present Tense
2. Past Tense
3. Future Tense

These are further classified into four sub parts.

1. Simple Present/Past/Future Tense
2. Present/Past/Future Continuous Tense
3. Present/Past/Future Perfect Tense
4. Present/Past/Future Perfect Continuous Tense

Thanks ! ☺️