CÓ VẤN ĐỀ ._.

Question 1: The puppet show begins ___ traditional songs and music.

A: with      B: by    C: in     D: on

Question 2: All my friends will come, __________ from Scarlet.

A: part       B: partly       C: apart         D: parts

Question 3: If you go downtown, you'll see the biggest church ___________ of the city's post office.

A: left      B: on the left       C: from the left       D: by the left

Question 4: This English class seemed very easy ___________ first

A: in         B: on            C: with            D: at

Question 5: you can borrow my notes, but don't let anyone__________

A: other       B: else           C: another          D: each other

Question 6: Can you tell me the different ___________ American English and British English?

A: between          B: from          C: by                  D: with

Question 7: Choose the word that has the underlined part pronounced differently from the others:

A: favor               B: glad         C: bank                D: happy

Question 8: Linda, we have ________ apples in the refrigerator.

A: none         B: any       C: nothing            D: no

Question 9: Give me a word ___________ with letter "A"

A: begins               B: begin               C: began            D: beginning

Question 10: My cousin didn't go to the cinema yesterday and Mick ___________

A: wasn't too           B: doesn't either          C: didn't neither           D: didn't either

\(\frac{x}{y}=\frac{3}{5}\)
\(\Rightarrow x=3;y=5\)
._.

1 . My mother ( teach ) is teaching now .

2 . What are you doing tonight ? - I ( play ) am playing table tennis

3 . ( Collect ) Collecting stamps is my favorite hobby .

4 . She can ( swim ) swim fast .

5 . Nga often ( come ) to school late because she ( go ) goes to bed late 

Ở đây để hỏi đáp , nếu bạn biết câu trả lời rồi thì đừng đăng nhé !

Cho mình xin , nhìn không hiểu . Rõ ràng hơn được không ?

Students (1) in  grade 7 have eleven subjects at school. In the Computer Science class, they learn (2) how to use a computer. Many students are very interested (3) in computer. In Literature, they learn about books, and (4) write essays. Some enjoy learning Geography because they can know more about the (5) world and their country (6) . In the Electronics class, they learn to repair household (7) appliances . They feel more excited in the (8) theory  class because teachers help them to speak, listen, write and read it. They learn a lot about plant, and animals in (9) Science . They still learn how to keep fit and play games in Physical (10) Education  .
K chắc câu 8 

                                                             
Kẻ một tia song song với tia Ax . Bz // Ax (1) 
Ta có : \(\widehat{B_1}+\widehat{A}=180^o\) ( hai góc trong cùng phía ) 
=>\(\widehat{B_2}+\widehat{C}=360^0-\widehat{B_1}+\widehat{A}=360^0-180^0=180^0\)
=> Bz//Cy (2)
Từ (1) và (2) suy ra :
Ax // Cy 
=> ĐPCM
 

Hung: What do you learn (1) at school, Nam?

Nam:  I learn many different subjects (2) like / such as Math, Literature, History, Geography, Civics,              Physics and so on.

Hung: Which are your (3) favourite subjects?

Nam:  They are English and Math.

Hung: Why do you like them?

Nam:  (4) Because they are interesting and important.

Hung: What do you often do (5) in your free time?

Nam:  I often (6) play sports and computer games.

Hung: Do you often read books or (7) listen to music?

Nam:  Yes, sometimes. And (8) how about  you?

Hung: I learn to play (9) the guitar, and I also go to the art (10) club  after school.

Nam:  Oh, it's getting late now. Bye, Hung.

Hung: Bye, Nam. See you tomorrow.

a) \(\frac{a}{2}=\frac{b}{3};\frac{b}{5}=\frac{c}{4}\)
\(\Rightarrow\frac{a}{10}=\frac{b}{15}=\frac{c}{12}\)
Áp dụng tính chất của dãy tỉ sô bằng nhau , có : 
\(\frac{a}{10}=\frac{b}{15}=\frac{c}{12}=\frac{a-b+c}{10-15+12}=\frac{-49}{7}=-7\)
=> a = -7 . 10 = -70 
b = -7 . 15 = -105 
c= -7 . 12 = -84 
b) Ta có : k là một số 
a = 2k 
b= 5k 
=> a.b = 10 
<=> 2k . 5k = 10 
= 10k² = 10 
=> k² = 10 : 10 = 1 
=> k = -1 ; 1 
=> a = 2. ( -1 ) = -2 
    a = 2 . 1 = 2 
=> b = 5 . ( -1 ) = -5 
 b = 5 . 1 = 5 
< bạn ghi sai chỗ x.y = 10 , phải là a.b = 10 >