Question

this book........ good subject matter ( contain) ​

Answer 1

Contains .................

hope it will helpful for you ✨✨ XD....

Answer 2

Sentence given with a blank:

This book ___ good subject matter.

Word Given:

contain

What to do?

→ Filled in the given blank with correct tense of the verb given.

Answer:

This book contains good subject matter.

Let's see HOW?

→ As the word "book", is a third person singular noun. And the sentence in given in the present tense.So, we need add 's' in the verb form. Hence,the answer is 'contains'.