Meaning: "growth" means something that helps cells grow.

Wrong options:

• groth: It leaves out the "w". Check the letters: "growth". A small spelling mistake loses the mark.
• grow: "grow" is missing the ending. The speaker says "growth", with "th" at the end.

Correct answer: smell

Explanation: Listen again to "create smell receptors". The sentence needs a word for the sense, not a different sense.

Meaning: "smell" means the sense that detects odors.

Wrong options:

• smel: It leaves out the "l". The right spelling is "smell". Every letter must be correct to get the mark.

Correct answer: class

Explanation: Here you hear "the class of drugs". It comes before "of drugs", so you need a word for a group.

Meaning: "class" means a group or type.

Wrong options:

• clas: It leaves out the "s". Check the letters: "class". A small spelling mistake loses the mark.

Correct answer: sweet

Explanation: The speaker says "receptors are for sweet things". You need a describing word that matches tastes.

Meaning: "sweet" means tasting like sugar.

Wrong options:

• sweat: Sweat is a different word with a different meaning.

Correct answer: coconut

Explanation: You hear "honeysuckle, coconut, homemade". The next word is the name of a familiar smell.

Meaning: "coconut" means a tropical nut with a hard shell and a distinct smell.

Wrong options:

• cocunut: It has "u" where the word has "o". The right spelling is "coconut". Every letter must be correct to get the mark.
• cocoa: "cocoa" is a close word, but it ends in "a". The speaker says "coconut", which ends in "nut".