Question

Neither of these two books ___ are interesting. Fill in with is /are
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Answer 1

Answer:

Neither of these books is interesting.

Explanation:

when neither is the subject , we use singular verb. while talkin we often use are but grammatically, 'neither is' is correct

Answer 2

Answer:

Neither of these two books is interesting.

Explanation:

When we write the word neither, the auxiliary verb following it is IS. This is a more formal way to write. For example-

1. Neither of the cars is red.
2. Neither of the two classes came prepared.
3. Neither of the girls is wearing the school uniform.
4. Neither of the two colors will look good on the walls.

Conclusion:

Neither of these two books is interesting.