She received three letters this morning. All of them were from Tony
A.All of the letters from Tony were received by her this morning
B.She received three letters this morning, all of which were from Tony
C.Three of the letters she received this morning were from Tony
D.All letters from Tony were received by her this morning

The man wanted to get some fresh air in the room. He opened the window.
A.The man got some fresh air in the room even though he opened the window
B.The man opened the window in order to get some fresh air in the room
C.Having opened, the room could get some fresh air
D.The man wanted to get some fresh air in the room because he opened the window

I might have taken French last semester if I’d known it was offered
A.I took French the last semester it was offered
B.Someone offered to teach me French last semester
C.I knew French was not offered last semester
D.I didn’t take French last semester as I didn’t know it was offered

1.2. TIẾNG ANH
Question 21 – 25: Choose a suitable word or phrase (marked A, B, C or D) to fill in each blank.
By the end of this March, I ________ English for 5 years. And I will take some higher-level courses in an English centre.
A.have studied
B.have been studying
C.will have been studying
D.will study

Until I saw her for myself, I didn’t think that Naomi had been badly wounded.
A.As soon as I saw Naomi, I knew that her injuries were very serious
B.Naomi hadn’t been hurt very badly, and I became aware of that at the time that I

saw her
C.Before I had seen Naomi’s wounds, I had supposed that they were extremely bad.
D.It was only when I saw Naomi that I realized how seriously she had been injured

One of the advantages of using crowd sourcing is _______.
A.we can get the best answer to our solution with the unbelievably small budget
B.within a relatively short period of time, we can get so many answers to a single problem
C.the company no longer hire employees to solve problems
D.hospitals can practically apply the method of crowd sourcing in consulting patients

Which of the following is NOT a good situation to use crowdsourcing?
A.A company needs to get ideas for a new sneaker.
B.A business is looking to understand why people like its products.
C.A student is looking for ideas on where to stay on holiday.
D.A person needs to understand a law for an important court case.

Choose the underlined part that needs correction
Traditionally, the flag is risen in the morning and then taken down at night
A.in the morning
B.taken
C.risen
D.at night

The word "They" in paragraph 3 refers to
A.the winning logo
B.the designer
C.the company
D.the website

Why might someone agree to translate a document for Duolingo?
A.They might get paid lots of money.
B.It will help them get a good job in the future.
C.Duolingo will let them use crowdsourcing for free.
D.It is a part of their free language course.