**Rule: Understanding Idiomatic Expressions.** The idiom 'a chip off the old block' refers to a person who is very similar to their parent in personality or appearance. The example of being 'just as stubborn as his father' illustrates this similarity. Option (c) is the correct definition. Option (a) is a literal misinterpretation. Option (b) is the opposite. Option (d) is a possible but separate issue.

**Rule: Understanding Idiomatic Expressions.** The idiom 'throw a spanner in the works' (or 'throw a wrench in the works' in the US) means to do something that suddenly prevents a plan from progressing. New, contradictory evidence can ruin a legal case. Option (b) is the correct definition. Option (a) is the opposite. Option (c) is a literal interpretation. Option (d) is a possible but incorrect interpretation.

**Rule: Understanding Idiomatic Expressions.** The idiom 'dodge a bullet' means to have a narrow escape from a dangerous or undesirable situation. Avoiding a bad investment that leads to bankruptcy is a perfect example of avoiding a financial disaster. Option (b) is the correct definition. Option (a) is the literal meaning. Option (c) is the opposite. Option (d) is an unrelated profession.

**Rule: Understanding Idiomatic Expressions.** The idiom 'with bells on' is used to say that one will be very happy and enthusiastic to go somewhere. It emphasizes eagerness. The phrase 'I wouldn't miss your party for the world!' reinforces this enthusiastic acceptance. Option (d) is the correct definition. Option (a) is a literal misinterpretation. Options (b) and (c) are the opposite of an enthusiastic 'yes'.

**Rule: Understanding Idiomatic Expressions.** The idiom 'move heaven and earth' means to do everything one possibly can to achieve a goal. It implies a huge amount of effort and determination. Option (c) is the correct definition. Option (a) is a literal misinterpretation. Option (b) is the opposite. Option (d) is a possible part of the effort, but not the whole meaning of the idiom.

**Rule: Understanding Idiomatic Expressions.** The idiom 'a pack of lies' is a strong way of saying that a statement or story is entirely false. The phrase 'from start to finish' reinforces the completeness of the falsehood. Option (c) is the correct definition. Option (a) is the opposite. Option (b) is a literal interpretation. Option (d) describes complexity, not truthfulness.

**Rule: Understanding Idiomatic Expressions.** The idiom 'second to none' is a way of saying that someone or something is the very best. If you are second to no one, you are first. Option (c) is the correct definition. Options (a) and (d) are misinterpretations of the word 'second'. Option (b) is the opposite.

**Rule: Understanding Idiomatic Expressions.** The idiom 'too many chiefs and not enough Indians' describes a situation where there are too many people giving orders and not enough people to carry them out. This leads to inefficiency, as suggested by 'nothing gets done'. Option (b) is the correct explanation. Options (a) and (d) are incorrect interpretations of the words 'chiefs' and 'Indians'. Option (c) is the opposite.

**Rule: Understanding Idiomatic Expressions.** The idiom 'read the riot act' means to issue a stern warning or scolding to someone to stop their unacceptable behavior. This is a common action for a teacher to take with 'misbehaving' students. Option (d) is the correct definition. Option (a) is the literal origin of the phrase. Options (b) and (c) are the opposite of a stern reprimand.

**Rule: Understanding Idiomatic Expressions.** The idiom 'off-the-cuff' describes something said or done spontaneously, without any prior thought or planning. Spontaneous remarks are often more likely to cause 'controversy' than planned ones. Option (b) is the correct definition. Option (a) is a possible origin of the phrase, but not its modern meaning. Option (c) is the opposite. Option (d) describes the content, not the manner, of the remarks.