Meaning: "obvious" means easy to see or understand.

Wrong options:

• obviuos: Two letters are in the wrong order. The right spelling is "obvious". Every letter must be correct to get the mark.
• obviously: "obviously" has an extra "ly" at the end. The speaker says "obvious".

Correct answer: differ

Explanation: Listen again to "begs to differ". After 'to' you need an action word.

Meaning: "differ" means to not agree or think differently.

Wrong options:

• difer: It leaves out the "f". Write "differ". Only the exact spelling gets the mark.

Correct answer: adapt

Explanation: Here you hear "hardware adapt itself". You need an action word that means change to fit.

Meaning: "adapt" means change to fit new needs or conditions.

Wrong options:

• adabt: It has "b" where the word has "p". The right spelling is "adapt". Every letter must be correct to get the mark.
• adapted: "adapted" has an extra "ed" at the end. The speaker says "adapt".

Correct answer: describe

Explanation: The speaker says "they describe in Nature Communications". You need an action word that means tell about.

Meaning: "describe" means tell what something is like or explain it.

Wrong options:

• desribe: It leaves out the "c". Check the letters: "describe". A small spelling mistake loses the mark.
• described: "described" has an extra "d" at the end. The speaker says "describe".

Correct answer: principles

Explanation: You hear "the principles of evolution". It comes after 'the', so you need a thing word, more than one, ending in s.

Meaning: "principles" means basic ideas or rules.

Wrong options:

• priciples: It leaves out the "n". Check the letters: "principles". A small spelling mistake loses the mark.
• principle: "principle" has no "s" at the end. The speaker says "principles", so write the "s".