Ex:Write the question words

1. What time do you go to school? I go to school at half past six

2. What time does she go to bed? She goes to bed to bed at ten o'clock

3. What are there in the refrigerator? There are some oranges

4.How much tea do you need? One packet,please

5. How many eggs does she need? A dozen

6. How much is a sandwich? 30000d

7. What are they doing? they are doing their homework

8. Where is she going? She's going to the market

What a lovely cat !

\(\Rightarrow\) How lovely is the cat !

Rearrange the sentences to make meaningful sentences

Question: color/ are/ carrots/ what/ these?

A. What color these carrots are?

B. What these carrots are color?

C. These carrots are what color?

D. What color are these carrots?

a) Vì |x| + |y| = 0

=> x = 0 và y = 0

b) Ta có |x| + |y| = 2
=> |x| thuộc {0; 1 ; 2 }

=> x thuộc {0 ; \(\pm1\) ; \(\pm2\) }

Tương tự với y

Vậy (x,y) = (-1;1) ; (2 ; 0) ; và hoán vị của chúng

2, |x| \(\in\) { 7 ; 8 ; 9}

=> x \(\in\) { \(\pm7;\pm8;\pm9\)}

Số 1 : 306 : ( 5 - 2 ) . 2 = 204

Số 2 : 306 + 204 = 510 

KL............... 

Choose the letter A, B, C or D the word that has different stress pattern from others.

A. banana

B. carrot

C. tomato

D. eraser

Với n \(\in\) Z , ta có : A= \(\dfrac{20n+13}{4n+3}\)

Gọi Ước chung lớn nhất của 20n+13 và 4n+3 là d ( d \(\in\) Z*)

\(\Rightarrow\left\{{}\begin{matrix}20n+13⋮d\\4n+3⋮d\end{matrix}\right.\)

\(\Rightarrow\left\{{}\begin{matrix}20n+13⋮d\\5\left(4n+3\right)⋮d\end{matrix}\right.\)

\(\Rightarrow\left\{{}\begin{matrix}20n+13⋮d\\20n+15⋮d\end{matrix}\right.\)

\(\Rightarrow\) (20n + 15) - (20n + 13)\(⋮\) d

\(\Rightarrow\) 20n + 15 - 20n - 13\(⋮\) d

\(\Rightarrow2⋮d\)

\(\Rightarrow d\inƯ\left(2\right)=\left\{\pm1;\pm2\right\}\)

Mà 20n+13 và 4n+3 ko có số nào chia hết cho 2

=> d = \(\pm1\)

Rewrite.

1. for / are / not / good / Candies / children`s teeth

\(\Rightarrow\) Candies is not good for children's teeth.

2. let`s / at / meet / tomorrow. / 7 pm

\(\Rightarrow\) Let's meet at 7 p.m tomorrow.

3. has / small / my English / white / teeth / teacher

\(\Rightarrow\) My English teacher has small white teeth.

4. HCM museum? / tell me / Can / you / the way to

\(\Rightarrow\) Can you tell me the way to HCM museum ?

5. is / My family`s / the wall. / picture / on

\(\Rightarrow\) My family's picture is on the wall.

Mary is sitting between Tom and John.