Giúp em gấp với ạ, em sắp đi học rồi!

I. Choose the best answer to complete the following sentences

1. The waitress..................served us dinner was friendly

A. which B. whom C. whose D. who

2. Does your father enjoy...................newspapers?

A. read B. reading C. to read D. be read

3. The children laughed..........................when they played with their toys

A. happy B. unhappy C. happily D. happiness

4. Why...................you absest yesterday?

A. did B. are C. was D. were

5. Before go to bed, please turn.....................all the lights

A. off B in C. on D. over

6. He didn't have much money, ...................he bought a lot of things at the shop for Tet

A. But B. and C. however D. although

7. Your father bought you new a book,.................?

A. didn't he B. did he C. does he D. don't he

8. We were................that nobody was hurt in the accident

A. amaze B. amazed C. amazing D. amazingly

II. Complete the sentences with the correct form of the word in brackets

1. He....quickly.........(quick) opened the door and ran out

2. We had an....enjoyable..........(enjoy) trip to Ba's home village last Sunday

3. There will be........sunny.............(sun) in the north-east tommorow

4. These ......innovations................(innovate) will conserve the earth's resouces

III. There is a mistake in the four underlined parts of each sentence. Find and correct it

1. (A)How(B) about (C)to share the cost (D) of accommodation?
to share => sharing

2. My brother (A)wishes he (B) has (C) a new (D)computer
has => had

3. (A)If I were her, I (B)will give him (C)her new (D)address
will give => would give

4. Mary (A)is reading a (B)book in (C)her room, (D)wasn't she?
wasn't she => isn't she.

70-8+123+234-111+789-222-111=

( 123 - 70 )+( 200 -8 )+(789 - 234 )+( 111 - 111) =

53 + 192 + 555 + 800 + 0 =

245 + 555 + 800 + 0 = 800

nhớ mình nha!

mong online math ko bị trừ điểm

\(x+\frac{2}{3}-x>0.\)

\(\Leftrightarrow\frac{2}{3}>0\)

Vậy Với tất cả các giá trị của x đều thoỉa mãn điều kiện.

c) =x²-3x+4x-12

=x(x-3)+4(x-3)

=(x-3)(x+4)

\(15\)chia hết \(\left(2x+1\right)\)

\(\Rightarrow\left(2x+1\right)\inƯ\left(15\right)=\left\{1;-1;3;-3;5;-5;15;-15\right\}\)

với 2x + 1 = 1 => x = 0

với 2x + 1 = -1 => x = -1

với 2x + 1 = 3 => x = 1

với 2x + 1 = -3 => x = -2

với 2x + 1 = 15 => x = 7 

Vơi 2x +1 = -15 => x=-8

KL;.........

Ta có:

A = 7² + 24² = 49 + 576 = 625 = 25², là số chính phương

B = 9² + 40² = 81 + 1600 = 1681 = 41², là số chính phương

Thanh kiều là tên của cô !

trái đất có hình cầu

đúng thì k nha

khai triển hằng đẳng thức đáng nhớ: (xy^2+z)(x^2y^4+z^2-xy^2z+z^2

Finish each sentence in such a way that it means exactly the same as the one printed before it.

1. It was a waste of time reading that novel

- I needn't read that novel.

2. "Let's check everything once more," said the policeman.

- The policeman suggested checking everything once more.

3. Although she appears to be indifferent, she is quite friendly.

- Contrary to her indifferent appearance, she is quite friendly.

4. He didn't remember anything about it, and neither did she.

- He forget everything about it and so did she.

5. We couldn't have got the prize if our father hadn't encouraged us.

- If it hadn't been for our father's encouragement, we couldn't have got the prize.

6. I wished I had applied for that job.

- It is a pity that I didn't apply for that job.

7. She didn't work hard enough, so she lost the job.

- The reason why she lost the job was she didn't work hard enough.

8. She asked John how he liked her new dress.

- "How do you like my new address" she asked John.

9. Women nowadays no longer depend on their husband.

- No longer do women nowadays depend on their husband.

10. We haven't had any intention of having a vacation so far this year.

- We haven't intended to have a vacation so far this year.