Meaning: "combination" means a joining of two or more things.

Wrong options:

• combonation: It has "o" where the word has "i". The right spelling is "combination". Every letter must be correct to get the mark.
• comination: It leaves out the "b". Check the letters: "combination". A small spelling mistake loses the mark.

Correct answer: identified

Explanation: Listen for "last summer, identified two topics". This already happened, so the word ends in ed.

Meaning: "identified" means found or named.

Wrong options:

• identifyed: It has "y" where the word has "i". Check the letters: "identified". A small spelling mistake loses the mark.
• identify: "identify" is a close word, but it ends in "y". The speaker says "identified", which ends in "ied".

Correct answer: macromolecular

Explanation: On the recording you hear "molecular and macromolecular scales". After "and" you need a word for a kind of scale, the word ends in ar.

Meaning: "macromolecular" means about very large molecules.

Wrong options:

• macromoleculer: It has "e" where the word has "a". The right spelling is "macromolecular". Every letter must be correct to get the mark.
• macromolecularl: It adds an extra "l". Write "macromolecular". Only the exact spelling gets the mark.

Correct answer: structures

Explanation: Listen again to "application of structures, devices and systems". It comes after "of", so you need a thing and more than one, do not forget s.

Meaning: "structures" means arranged or built things.

Wrong options:

• strucutures: It adds an extra "u". Check the letters: "structures". A small spelling mistake loses the mark.
• structure: "structure" has no "s" at the end. The speaker says "structures", so write the "s".

Correct answer: loosely

Explanation: Here you hear "but loosely speaking people". The sentence needs a word that tells how, so it ends in ly.

Meaning: "loosely" means not exactly or roughly.

Wrong options:

• loosly: It leaves out the "e". Check the letters: "loosely". A small spelling mistake loses the mark.