Meaning: "eliminate" means to remove completely.

Wrong options:

• elimanate: It has "a" where the word has "i". Check the letters: "eliminate". A small spelling mistake loses the mark.
• eliminated: "eliminated" has an extra "d" at the end. The speaker says "eliminate".

Correct answer: population

Explanation: Listen again to "that mosquito population". It comes after 'mosquito', so you need a word for a group that ends in ion.

Meaning: "population" means the group of those mosquitoes.

Wrong options:

• populaton: It leaves out the "i". The right spelling is "population". Every letter must be correct to get the mark.
• populations: "populations" has an extra "s" at the end. The speaker says "population", with no "s".

Correct answer: levels

Explanation: Here you hear "different levels". After 'these' you need more than one, so the word ends in s.

Meaning: "levels" means different stages or degrees across places.

Wrong options:

• levles: Two letters are in the wrong order. Write "levels". Only the exact spelling gets the mark.
• level: "level" has no "s" at the end. The speaker says "levels", so write the "s".

Correct answer: infrastructure

Explanation: The speaker says "educational infrastructure you need". It comes after 'educational', so you need a word for the systems and services, ends in ture.

Meaning: "infrastructure" means the basic systems and services needed for health work.

Wrong options:

• infrastruxture: It has "x" where the word has "c". The right spelling is "infrastructure". Every letter must be correct to get the mark.

Correct answer: challenge

Explanation: You hear "are quite a challenge". It comes after 'a', so you need a word for a difficult thing.

Meaning: "challenge" means a difficult task or problem.

Wrong options:

• chalenge: It leaves out the "l". The right spelling is "challenge". Every letter must be correct to get the mark.
• chance: This word means an opportunity, not a difficult task.