/d/: listened, raised, rained, opened, seemed, learned, remembered, arrived, lived, received.

/t/: wrapped, looked, watched, helped, practiced, stopped, worked, talked, liked, washed.

/id/: painted, needed, visited, rented, invited.

The office may be closed , so Mark won't be able to get in

-> If the office ...............is not closed, Mark will be able to get in................

Đề thì thế bạn ??? với lại x=7 thì làm gì bằng

a) \(B=x^2-2x+10=\left(x-1\right)^2+9\ge9\)

=> B luôn dương,

b) Dấu "=" xảy ra khi: x=1

Vậy minB=9 khi x=1

2.

<=> 7x-21=5x+25 <=> 7x-5x=25+21 <=> 2x=46<=>x=23

A : 100

B  : 0

Ta có:

\(\sqrt{2}+1>\sqrt{1}+1=2\)

vậy \(\sqrt{2}+1>2\)

Where did they do last Sunday?

=> They played soccer in the stadium.

\(a^2+b^2+c^2=ab+ac+bc\Leftrightarrow2a^2+2b^2+2c^2=2ab+2ac+2bc\)

\(\Leftrightarrow\left(a^2-2ab+b^2\right)+\left(b^2-2bc+c^2\right)+\left(a^2-2ac+c^2\right)=0\)

\(\Leftrightarrow\left(a-b\right)^2+\left(b-c\right)^2+\left(a-c\right)^2=0\)

\(\Leftrightarrow\left\{{}\begin{matrix}a-b=0\\b-c=0\\a-c=0\end{matrix}\right.\)\(\Leftrightarrow\left\{{}\begin{matrix}a=b\\b=c\\a=c\end{matrix}\right.\)

\(\Leftrightarrow a=b=c\)

Viết lại câu sao cho nghĩa không đổi :

1 , What does Mr.Tuan do ?

What ........is Mr.Tuan's job?...................

2 , How heavy is your baby ?

What ............ weight does your baby ?............

3 , What about going to the theater ?

Why ....................don't we go to the theater?.......................

4 , How much are thoes book ?

What ..................... are the prive of thoes books?............................

5 , Where does he live ?

What ............is his addres?...........................

6 , The water is hot .

What ...............hot water!....................................

How ................hot water is!.......................

7 , My house is near the movie theater .

My house isn't ....................far from the movie theater...............................

8 , Nam is more intelligent than his sister .

Nam's sister isn't ..............as intelligent as Nam....................

9 , Hoa spent half an hour practicing the guitar .

It ...................took Hoa half an hour to practice the guitar.......................

10 , How far is it from here to the marker ?

What is ..................What is the distance from here to the market?​...............