Meaning: "cluster" means a group placed close together.

Wrong options:

• clustr: It leaves out the "e". Write "cluster". Only the exact spelling gets the mark.
• clutter: This is a different word with a different meaning.

Correct answer: patterns

Explanation: Listen for "central patterns generator". You need more than one, so it ends in s.

Meaning: "patterns" means repeated sets that show how things happen.

Wrong options:

• paterns: It leaves out the "t". Write "patterns". Only the exact spelling gets the mark.
• pattern: "pattern" has no "s" at the end. The speaker says "patterns", so write the "s".

Correct answer: contract

Explanation: On the recording you hear "to contract rhythmically". It needs the plain word for the action.

Meaning: "contract" means to get shorter and make force, like a muscle.

Wrong options:

• conract: It leaves out the "t". Check the letters: "contract". A small spelling mistake loses the mark.
• contracted: "contracted" has an extra "ed" at the end. The speaker says "contract".

Correct answer: running

Explanation: Listen again to "produces running or walking". You need a word that ends in ing.

Meaning: "running" means moving fast on foot in a steady way.

Wrong options:

• runing: It leaves out the "n". Check the letters: "running". A small spelling mistake loses the mark.
• runner: "runner" is a close word, but it ends in "er". The speaker says "running", which ends in "ing".

Correct answer: modes

Explanation: Here you hear "different modes such as". You need more than one, so add s.

Meaning: "modes" means different ways or settings of action.

Wrong options:

• mode: "mode" has no "s" at the end. The speaker says "modes", so write the "s".