Exercise 2. Choose the underlined part A, B, C or D that needs correcting.

1. The policemen are (A) trying to catch (B) the teenagers whom (C) caused the accident yesterday.

2. Valentine’s Day is (A) the day where (B) people celebrate (C) love and affection for their partners and loved ones.

3. At (A) yesterday’s conference, I met (B) a man who he (C) had extensive knowledge in the field of artificial intelligence.

4. Many (A) Hollywood movies and TV series (B) are produced (C) in America (D) English.

5. The professor of Linguistic (A) introduced (B) us to an interesting model of (C) different uses (D) of English around the world.

6. Learning (A) English grammar can be (B) quite complicate (C) due to its numerous (D) rules and exceptions.

7. He is a famous chef who (A) recipes have (B) been featured in (C) top culinary magazines (D).

8. She worked hard (A) to become fluently (B) in Spanish (C) and now she can have (D) conversations with native speakers.

9. She wondered (A) if I had explored (B) the Great Barrier Reef while in (C) Australia yesterday (D).

10. Our team leader wanted (A) to know if we would (B) gone (C) on business in New Zealand the (D) following week.

11. Our guest today is (A) a person who (B) have (C) visited over (D) 50 countries in the world.

12. With a fix (A) itinerary, we knew (B) exactly what to expect (C) during (D) the trip.

13. The black car, which (A) engine has(B)  recently been (C) replaced, runs (D) smoothly now.

14. The house, which (A) painted blue, stood out (B) among the other buildings (C) on (D) the street.

15. The artist, who (A) paintings are displayed (B) in galleries worldwide, has (C) recently gained international recognition (D).

16. We have (A) a neighbour which (B) volunteers at (C) the local animal shelter and takes (D) care of abandoned pets.

17. The self-guide (A) bike tour allowed (B) us to explore (C) the countryside and enjoy (D) the scenic beauty at our own pace.

18. We stayed (A) in a guesthouse, which (B) had a peaceful (C) atmosphere, for our accommodate (D) during the exploration.

19. Jane’s husband asked (A) her if she can (B) pick up (C) their children on (D) her way home.

20. My classmates wanted to know if I had bought (A) these (B) tickets for (C) the concert the following (D) month.

Exercise 5. Complete the sentences with the words in the box.

1. The international school hired a _____________________ of Spanish to teach their students.

2. The online _____________________ provides instant access to a vast collection of words and their meanings.

3. The mathematician created a statistical _________________ to analyse the probability of a rare event occurring.

4. The university offers a _______________ education program, where students learn subjects in two languages.

5. The teacher will _________________ the homework assignment and answer any questions the students may have.

6. The _____________________ from Japan will study with us in the US this semester. She shares with us many interesting things about Japanese culture.

7. The restaurant received a five-star rating, meeting the highest _____________________ of culinary excellence.

8. Our student often uses the library’s computer to _____________________ the definition of an unfamiliar word.

9. The _________ chose to leave behind their homeland and adapt to a new country with different customs and norms.

10. I like my new English teacher because she explained the rules of ______________ in a very clear and easy way.

III.GRAMMAR:

Exercise 1. Choose the correct option A, B, C, or D to complete the sentences.

1. The worker asked the manager if he _____________ the promotion the following month.

A. have received         B. had received           C. would receive         D. will receive

2. She wondered whether I _____________ home late the night before.

A. have come B. had come                C. would come            D. was coming

3. She wanted _____________ if I would travel to Ha Long Bay the next day.

A. knowing                 B. to know                  C. knew                       D. for knowing

4. Lien wondered whether the movie _____________ worth watching.

A. were                       B. had been                 C. would                     D. was

5. He wanted to know if I _____________ to his sister the day before.

A. had spoken             B. spoken                    C. were speaking        D. would speak

6. The tour guide ____________ accompanied us on our trip to Bangkok was very knowledgeable and funny.

A. who                                    B. whose                                 C. which

7. This scholarship program supports students ____________ have exceptional academic performance.

A. who                                    B. whose                                 C. which

8. The report ____________ I gave you yesterday was about our latest products.

A. who                                    B. whose                                 C. which

9. I think our backyard ____________ features a beautiful garden is perfect for the party this Saturday.

A. who                                    B. whose                                 C. which

10. I was proud of my daughter. She helped a man ____________ car broke down on the highway yesterday.

A. who                                    B. whose                                 C. which

Exercise 3. Match the types of tours with their descriptions.

Exercise 4: Match the words with their explanations.

Exercise 1: Match the words with their explanations.

Exercise 2. Complete the sentences with the given words.

1. We went hiking to the top of a mountain in Sa Pa and were rewarded with a _____________ view.

2. It’s important to _____________ the impact of your actions on the environment when going on a natural exploration.

3. The boss called for an immediate meeting to discuss a(n) _____________ matter.

4. The researchers managed to _____________ a new planet by using the latest telescopes.

5. The company publishes a(n) _____________ report to summarise its performance and achievements of the year.

6. After a challenging climb, they finally reached the _____________ of the mountain.

7. Some people _____________ an incredible memory that allows them to recall information clearly and precisely.

8. The lunar eclipse will _____________ tonight, so be sure to look up at the sky.

9. We all _____________ the bravery of our military service members.

10. Despite the difficult circumstances, she didn’t _____________ to lend a helping hand to those in need.

Hỗn hợp X gồm CH3COOH và CH3OH.Chia hh A thành 3 phần bằng nhau

-Phần 1:Tác dụng với K dư thu được 13,6345 L khí đkc

-Phần 2: Tác dụng với CaCO3 dư thấy thoát ra 6,1975 L khí đkc 

-Phần 3: Đun nóng với H2SO4 đặc để điều chế ester 

a)Viết PTHH

b) Tính khối lượng mỗ chất trong hh X

c) Tính khối lượng ester thu được biết hiệu suất phản ứng ester hóa là 90%

Cho 12,9g X là hỗn hợp gồm rượu Ethylic và Acetic Acid.Để trung hòa cần vừa đủ 50ml dd NaOH 2M

a) Tính thành phần trăm khối lượng mỗi chất trong hh X

b) Đun nóng lượng X trên với H2SO4 đặc làm xúc tácu được 7,04g Ester.Tính hiệu suất phản ứng tạo ester