[ Grammar ]

Please be careful when you do your _____.

A. calculate

B. calculation

C. calculator

D. calculating

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Other quiz: *Grammar*

Which is the correct way to write the following sentence?

I gave up on understanding calculus for it is impossibly difficult.

_

A. I gave up on understanding calculus, for it is impossibly difficult.

B. I gave up on understanding calculus, for, it is impossibly difficult.

C. I gave up on understanding calculus for it is impossibly difficult.

D. I gave up on understanding calculus. For it is impossibly difficult.

**How to use :** Read the question carefully, then select one of the answers button.