Choose the option that best complete the gap (s) If you are confused.......anything, phone my office

Analyze the question: This is a test of prepositions that follow adjectives or participles. We need the right preposition after "confused" when it introduces the thing causing the confusion.

Explain the concept: "Confused" is followed by different prepositions depending on the meaning:

• confused about something means you are unsure or uncertain about it (the most common use).
• confused by something means it puzzles you (the cause of the confusion).
• confused with something means mistaking one thing for another, e.g. "He confused me with my brother."

Solution: The sentence is: "If you are confused __ anything, phone my office."

1. The meaning is "If you are unsure or uncertain regarding anything."
2. A. of is wrong because "confused of" is not standard English.
3. B. with is wrong because "confused with" means mistaking one thing for another, which doesn't fit here.
4. C. about is correct because "confused about anything" means unsure or puzzled concerning anything.
5. D. for is wrong because "confused for" is only used when someone is mistaken for someone else, e.g. "She was confused for her sister."

The correct sentence is: If you are confused about anything, phone my office.

Tip: Remember this pattern: confused ABOUT a topic or issue, confused WITH another thing you mix it up with. If the sentence is about being unsure of something, use "about". The same goes for similar words like worried about, anxious about, uncertain about.