Meaning: "construct" means to make or build ideas.

Wrong options:

• constract: It has "a" where the word has "u". Check the letters: "construct". A small spelling mistake loses the mark.
• constructs: "constructs" has an extra "s" at the end. The speaker says "construct", with no "s".

Correct answer: complexity

Explanation: You hear "increasing the complexity of the ideas". The word names a thing and ends in ty.

Meaning: "complexity" means how complicated something is.

Wrong options:

• complexty: It leaves out the "i". The right spelling is "complexity". Every letter must be correct to get the mark.
• complex: "complex" is missing the ending. The speaker says "complexity", with "ity" at the end.

Correct answer: incorporate

Explanation: Listen for "to incorporate these 'exceptional' events". It follows "to", so you need an action word, ends in ate.

Meaning: "incorporate" means to include something into existing ideas.

Wrong options:

• incorperate: It has "e" where the word has "o". The right spelling is "incorporate". Every letter must be correct to get the mark.
• incorporates: "incorporates" has an extra "s" at the end. The speaker says "incorporate", with no "s".

Correct answer: attempting

Explanation: On the recording you hear "observing, attempting to explain patterns". The list shows several actions, so the word ends in ing.

Meaning: "attempting" means trying to do something.

Wrong options:

• attemping: It leaves out the "t". Write "attempting". Only the exact spelling gets the mark.
• attempt: "attempt" is missing the ending. The speaker says "attempting", with "ing" at the end.

Correct answer: curiosity

Explanation: Listen again to "their natural curiosity and training". It names a feeling, and ends in ity.

Meaning: "curiosity" means a wish to know or learn more.

Wrong options:

• curiousity: It adds an extra "u". The right spelling is "curiosity". Every letter must be correct to get the mark.
• curious: "curious" is a close word, but it ends in "us". The speaker says "curiosity", which ends in "sity".

Correct answer: complex

Explanation: Here you hear "the complex interactions of the Earth's systems". It comes after "the", so you need a describing word.

Meaning: "complex" means made of many connected parts and not simple.

Wrong options:

• comlex: It leaves out the "p". Write "complex". Only the exact spelling gets the mark.
• complexity: "complexity" has an extra "ity" at the end. The speaker says "complex".