I. Find the word which has a different sound in the part underlined.

1. C. anniversary
2. C. erode
3. B. stimulate

II. Find the word which has a different position of the main stress in each line.

1. C. explore
2. D. stimulate

II. Choose A, B, C, or D to complete each sentence:

1. B. area
2. B. reach

I. Pronunciation:

1. C. anniversary (The "a" is pronounced as /æ/, while the others have /ə/ or /eɪ/.)
2. D. openness (The "o" is pronounced as /əʊ/, while the others have /ɒ/ or /ə/.)
3. A. rusty (The "u" is pronounced as /ʌ/, while the others have /juː/ or /ʊə/.)

Stress:

1. C. explore (The stress is on the second syllable, while the others are stressed on the first.)
2. A. immersion (The stress is on the second syllable, while the others are stressed on the first.)

II. Vocabulary:

1. A. territory: While all options relate to land, "territory" is the best fit in the context of local people and their customs/culture. It refers to a specific area under the control of a group or nation, often associated with its inhabitants. "Area" is too general, "land" is more about physical geography, and "nation" refers to a large group of people united by common descent, history, culture, or language, inhabiting a particular country.
2. A. arrive: "Arrive" is typically used with destinations (arrive at a place, arrive in a city/country). While "reach" can sometimes be used similarly, it emphasizes the act of getting to a place after effort. "Get" is more informal and "achieve" is about accomplishing something, not reaching a physical location.