A : Do you want to .....play chess........ chess ?

B: Yes , I do . It's my .......favorite ......... sport .

A : How often do you play .......it ......... ?

B : Always .

A : ..........Where ........... do you play it ?

B : In School yard .

A : .......When ................ do you it ?

The government conducted a campaign to improve road.....

A) safe b) safely C) safety D) safer

1 . students/are/new/not/those....=>Those are not new students

2 . whose/is/coat/it => Whose caot is it ?

3 . grandmother/grandfather/are/my/those/and .=>Those are my grandfather and grandmother

4 . old/your/grandmother/is/how => How old is your grandmother ?

5 .young / is / teacher / friendly/ our /and/new .=> Our teacher is young and friendly

Ta có : a.b = a+b

=> a -ab +b = 0

=> a-b(a +1)=0

=> a-1-b(a+1)=-1

=>(a-1).(1-b)=-1

=> a-1 ; 1-b thuộc Ư (-1)

=> \(\left[{}\begin{matrix}a-1=1\\a-1=-1\end{matrix}\right.=>\left[{}\begin{matrix}1-b=-1\\1-b=1\end{matrix}\right.\)

=> a=2 , b=2

=> a=0 , b=0

Vậy cặp (a,b) =(2;2) , (0;0)

1. (to the cinema/never/i/go)=>I never go to the cinema

2.(work/Martina/hard /always) => Martina always work hard

3.( like/chocolate/children/usually)=>Children usually like chocolate

4. (Jackie/parties/enjoy/always)=>Jackie always ennjoy parties

5.(often/peoples names/i/ forget)=>I often forget peoples names

6. ( tv/sam/watch/never)=>Sam never watches TV

7.( usually/dinner/we/have/at7:30)=>We usually have dinner at 7 : 30

8. (Kate/always/ nice clothes/wear)=>Kate always wear nice clothes

1 . is that they teacher => their

2. this is my pen and that is her => hers

3 . they is new cars =. are

4 . hoa is mine sister =>my

5. where __ my book => is

6 . when is yours birthday ?=>your

7 .he teacher is very friendly=>His

8 . theirs house is small=>are

9 . she is mary mother

10 . it is hospital big

Để giữ gìn sức khỏe,mỗi học sinh không nên làm việc và học tập quá chăm chỉ.

A.Đúng

B.Sai

Ko có cái nào đúng

Gọi 2 số nguyên liên tiếp là x và x +1

Theo đề bài ta có :

(x+1) ² - x ² = (x +1 - x) .( x+1+x ) =2x+1

Vậy 2x là số chẵn =>2x+1 là số lẻ ( hoành thành)

tờ nào zKim Hue Truong