Các giá trị của x để phân thức xác định là:
A. x ∉ {0; -1}
B. x ∉ {0; 4}
C. x ∉ {-1; 4}
D. x ∉ {0; -1; 4}

Tìm các số A, B, C thỏa mãn đẳng thức:
A. A = 1, B = 0, C = 2
B. A = 0, B = 2, C = 1
C. A = 1, B = 2, C = 0
D. A = 0, B = 1, C = 2

Kết quả rút gọn của biểu thức
A.
B.
C.
D.

Cho tập B = {-21, -20, -19, ..., 17, 18, 19}. Hãy cho biết có bao nhiêu giá trị của x trong tập B là nghiệm của bất phương trình |x - 3| < 20?
A. 36 giá trị
B. 39 giá trị
C. 42 giá trị
D. 25 giá trị

Số nguyên âm lớn nhất thỏa mãn bất đẳng thức 4,1x - 2,5x > 11,6 là:
A. -4
B. -2
C. -1
D. -3

Choose the word or phrase that best completes each unfinished sentence below.
Example:
While the choir ________Christmas carols, we were making them some cocoa.
A- are singing
B- were singing
C- sang
D- have sung

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Example:
While Angela was cleaning her room, she ________her lost ear-ring.
A- is finding
B- finds
C- has found
D- found

Read the following passage and choose the best answers to each of the questions below.
Hue is the ancient imperial capital of Vietnam during the time of the Nguyen Dynasty (1802-1945). It is comfortably reached by plane or train from Hanoi. But it takes up to 14 hours to get to Hue from Hanoi if you travel by bus. On the South bank of the famous Huong River, opposite the Ancient Citadel and around the Le Loi and Hung Vuong Streets is where the majority of Hue’s hotels, restaurants and tourist services are located and this makes it easy for you to find everything you will need to maximize the enjoyment of your stay in the Imperial City. Many people hire motorcycles or bicycles to visit the historical sights and monuments there but it is possible to walk, or to take a taxi or cyclo, too.

Choose the word (a, b, c, or d) that best fits each of the blank spaces.
I have always wanted (1) _____ fishing. On the last day of my vacation, I went fishing on a beautiful lake. Unfortunately, I didn’t catch any fish, and I got (2)_____. I decided (3) _____ swimming. When I stood up, (4)_____wallet fell out of my pocket, and into the water. It had all my money, my passport, my plane tickets - everything. I jumped into the lake to look (5)____it, but I didn’t find anything.
The next morning, I wasn't able to leave the hotel. I had no money to pay the bill and no plane ticket or passport to go home. So what did I do? I called my parents and asked for some money. I have never had such a terrible experience!

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Example:
________is a type of white or gray stone containing calcium, used for building and making cement.
A- Slope
B- Limestone
C- Site
D- Sand