Meaning: "migrating" means moving to a different place regularly.

Wrong options:

• migraing: It leaves out the "t". Write "migrating". Only the exact spelling gets the mark.
• migrated: "migrated" is a close word, but it ends in "ed". The speaker says "migrating", which ends in "ing".

Correct answer: viruses

Explanation: Here you hear "fresh DNA, viruses and bacteria". It lists things, so you need more than one and it ends in s.

Meaning: "viruses" means tiny germs that can cause disease.

Wrong options:

• viruss: It leaves out the "e". Write "viruses". Only the exact spelling gets the mark.
• virus: "virus" has no "es" at the end. The speaker says "viruses", so write the "es".

Correct answer: annual

Explanation: The speaker says "their epic annual journey". It means the trip happens every year.

Meaning: "annual" means happening every year.

Wrong options:

• anual: It leaves out the "n". The right spelling is "annual". Every letter must be correct to get the mark.

Correct answer: surface

Explanation: You hear "to the surface to breathe". It comes after "to the", so you need a word for a place.

Meaning: "surface" means the top of the water.

Wrong options:

• surace: It leaves out the "f". The right spelling is "surface". Every letter must be correct to get the mark.

Correct answer: indicates

Explanation: Listen for "nasal mucus indicates the health". It is an action word and ends in s.

Meaning: "indicates" means shows or tells about.

Wrong options:

• indcates: It leaves out the "i". Write "indicates". Only the exact spelling gets the mark.