hãy giúp em phần này ạ.

1. A. coast B. upload The answer is B. upload. "coast" has a clear /oʊ/ sound followed by /st/. "upload" has an /ə/ sound (schwa sound) which makes it pronounced differently from "coast". 2. A. mouth C. abroad D. roadside B. method C. birthday D. weather The answer is C. abroad. "mouth", "roadside", "method", "birthday", and "weather" all have a clear /oʊ/ or /ɔː/ sound. "abroad" has a schwa sound /ə/. 3. A. decided B. changed C. required D. programmed The answer is B. changed. "decided", "required", and "programmed" all have a /aɪ/ sound after /d/. "changed" has an /eɪn/ sound instead. Here are the analyses and answers to the questions: **QUESTION 4** A. joyful B. ideal C. absent D. common Analyze: 'joyful' stressed at first syllable 'ideal' stressed at second syllable 'absent' stressed at first syllable 'common' stressed at first syllable Therefore, 'ideal' has a different stress position to other words. Answer: B. ideal **QUESTION 5** A. education B. entertainment C. effectively D. electronic Analyze: 'education' stressed at third syllable 'entertainment' stressed at third syllable 'effectively' stressed at second syllable 'electronic' stressed at third syllable Therefore, 'effectively' has a different stress position to other words. Answer: C. effectively