Question

uses the conditional tense?
A. If the library is open, I would have borrowed a book. B. If the library is open, I will borrow a book. C. If the library had been open, I will borrow a book. D. If the library were open, I will borrow a book.

Answer 1

The sentence that correctly uses the conditional tense is:

**B. If the library is open, I will borrow a book.**

This sentence expresses a possible future scenario that depends on the condition of the library being open.

The other options either use incorrect verb forms or mix tenses improperly:

- **A** uses the wrong form ("would have borrowed") for the present conditional.
- **C** mixes past perfect ("had been") with future ("will borrow"), which is incorrect.
- **D** uses the subjunctive ("were") but pairs it with "will" instead of a conditional result.

So, **B** is the correct choice for the conditional tense.