Sure, let's go through the questions one by one.

**Choose the word which has a different sound in the part underlined.**

1. A. youth
B. cloth
C. bathe
D. month

- The different sound is in "C. bathe" (the "th" sound is voiced, unlike the others which are unvoiced).

2. A. museum
B. situation
C. regulation
D. custom

- The different sound is in "A. museum" (the "s" sound is /z/ while the others are /ʃ/).

3. A. stroll
B. oversea
C. remove
D. go

- The different sound is in "D. go" (the "o" sound is /oʊ/ while the others are /əʊ/).

4. A. lucky
B. structure
C. push
D. struggle

- The different sound is in "C. push" (the "u" sound is /ʊ/ while the others are /ʌ/).

**Choose the word which has a different stress pattern from the others.**

1. A. competition
B. invitation
C. nation
D. conservation

- The different stress pattern is in "C. nation" (stress on the first syllable, while the others have stress on the second syllable).

2. A. librarian
B. bamboo
C. develop
D. cultural

- The different stress pattern is in "D. cultural" (stress on the first syllable, while the others have stress on the second syllable).

3. A. festival
B. resource
C. station
D. history

- The different stress pattern is in "B. resource" (stress on the second syllable, while the others have stress on the first syllable).

4. A. statue
B. important
C. devote
D. begin

- The different stress pattern is in "A. statue" (stress on the first syllable, while the others have stress on the second syllable).

**Choose A, B, C, D for each gap in the following sentences.**

1. You ______ miss any of the meetings. They're always very useful.
- A. needn't

2. She is famous ______ her intelligence. She designs many special styles for Ao dai.
- B. for

3. When having meals with a Britain family, you should never chew with your ______ open.
- D. mouth

4. My sister has been living in Da Lat for two years; ______, she has never been to Than Tho Lake.
- A. however

5. ______ you study harder, you won't be able to pass the examination.
- C. If

6. We ______ wear uniform at school from Monday to Saturday. That's good way and equal to everyone.
- A. have to

7. The Xoe dance is a ______ tradition of Thai ethnic people.
- B. spiritual

8. We do not have many carnivals in Viet Nam; ______ we have many special traditional Festivals.
- C. nevertheless