Here are the answers:
33. C. If my sister wants to attend medicine school, she should study harder.
34. D. Sarah suggested that Jim should postpone his trip til the autumn.
35. C. Linh doesn't learn English so well as Nam does.
36. C. Trung went on the expedition despite having a bad cold.
37. C. I wish I could swim so I would feel safe in the boat.
38. B. The man who paid for the meal was a friend of Tom's.
39. C. The less expensive the holiday, the more relaxing it is.
40. B. We will give you a call as soon as we arrive.
I can help you with that.
To answer the question, we need to analyze the underlined part of each word. However, since the underlined parts are not explicitly provided, we will assume that the underlined part is the one with the main stress (denoted by the "ˈ" sign in the IPA notation).
1. A. university: junəˈvərsəti (main stress on "vər")
B. unit: ˈjunɪt (main stress on "jun")
C. understand: əndərˈstænd (main stress on "stænd")
D. uniform: ˈjunəfɔrm (main stress on "jun")
In this case, the word "understand" has its main stress on the third syllable, whereas the others have their main stress on the first syllable. However, let's look at the vowel sound in the underlined part. The words "university", "unit", and "uniform" all have the "u" sound in their underlined parts (/jun/ or /jʊn/ sound), while "understand" has the schwa sound (/ə/) followed by the "n" sound. So, the underlined part of "understand" is pronounced differently from that of the others.
However, another way to analyze this is by looking at the vowel sound in the first syllable of each word. In that case, "university" would be the answer because it is the only one that has the "u" sound in its first syllable without the main stress (/junə/ vs /junɪt/, /junə/, /ən/).
2. A. hold: hoʊld
B. family: ˈfæməli
C. celebrate: ˈsɛləbreɪt
D. calm: kɑm
The words "hold", "family", and "celebrate" all end with the sound /ld/, /li/, /t/ respectively after a vowel sound. However, the word "calm" has the /ɑm/ sound, which starts with the "ɑ" sound, a open back unrounded vowel sound, whereas the others start with a diphthong or a different vowel sound (/oʊ/, /æ/, /ɛ/ respectively).
3.
Analyze:
'pursue' stressed at second syllable
'western' stressed at first syllable
'lifestyle' stressed at first syllable
'freedom' stressed at first syllable
Therefore, 'pursue' has a different stress position to other words.
Answer: A. pursue
4.
Analyze:
'democratic' stressed at third syllable
'generation' stressed at third syllable
'experience' stressed at second syllable
'transportation' stressed at third syllable
Therefore, 'experience' has a different stress position to other words.
Answer: C. experience
For question 5, the correct answer is B. nuclear.
For question 6, the correct answer is A. private.
7. C. limited
8. B. forget