Past or Present perfect?

[rajeshmalladi]

I wrote that book.
I have written that book.

Is the first sentence correct eventhough it doesn't indicate any time.

What floor is furniture on?
Which floor is furniture on?

Which of the above sentences is correct and common?

I will need financing.
I need financing.

What is the difference among the above two sentences.

[Rusty]

I wrote that book.
I have written that book.

Is the first sentence correct eventhough it doesn't indicate any time.
(The first sentence is the correct one. The second sentence is not correct. It suggests that you have written that book many times. Compare: I have read that book. This sentence is OK).

What floor is furniture on?
Which floor is furniture on?

Which of the above sentences is correct and common? (Both are common).

I will need financing. (Future)
I need financing. (Present).

What is the difference <strike>among</strike> between the above two sentences. (Future and present tenses).