Mình nghĩ là "Over Package" bạn nhé ...

Nghĩa là "trọn gói" nhé

1. Look at the time then write the answers to this question: What time is it? The first one is done for you.

a) 06:20 It's twenty past six./ It's six twenty.

b, 21:15 It's a quarter past twenty-one/It's twenty-one fifteen.

c, 03:19 It's three nineteen/It's nineteen past three.

d, 09:15 It's nine fifteen/ It's a quarter past nine.

e, 15:45 It's a quarter to sixteen/ It's fifteen forty-five.

f, 18:30 It's half past eighteen/ It's eighteen thirty.

g, 09:50 It's nine fifty/It's ten to ten.

h, 01:25 It's one twenty-five/It's twenty-five past one.

i, 05:45 It's a quarter to six/It's ten forty-five.

j, 12:18 It's twelve eighteen/ it's eighteen past twelve.

2. Write the answers to the questions about your mother / father

a, What is your mother / father?

Hỏi về gì bạn ??? Nghề nghiệp ạ?

b, Where does she / he work ?

He works on a farm.

c, What time does she / he get up?

at 6.00 am

d, What time does she / he go to work?

at 7.00 am

e, What time does she / he have lunch?

at 11.30 am

f, What time does she / he get home in the afternoon?

at 5.55 pm

g, What time does she / he have dinner?

at 7 pm

h, What time does she / he go to bed?

at 11 pm

3. Complete the passage. Use the present progressive form of the verbs in brackets. The first one is done for you.

Binh is now in the school canteen. He is making a phone call to his friend, Dung.

"Hi, Dung. I am sitting ( sit ) in the canteen. I am calling ( call ) to tell you about my timetable.

Can you here me? It is very noisy here. The students are making ( make ) a lot of noise. They are laughing ( laugh ) and talking ( talk ).

They are eating ( eat ) and drinking ( drink ). They are listening ( listen ) to music. Many of them are coming ( come ) and leaving ( leave ), but some are sitting ( sit ) quietly.

Are you ( listen ) listening ? I'm sorry, but the bell is ringing ( ring ). I am leaving ( leave ) now. I must go to my class."

V/ Cho dạng đúng của động từ trong ngoặc để hoàn thành câu:

1, We ( eat ) ate a delicious dinner at a Mexian restaurant last Wednesday.

2, Yesterday, I called Jason on the phone. He ( not be ) wasn't at home so I (speak) spoke to his sister.

3, Her grandmother (work) worked in a local hospital in 1992.

4, My father used to be a teacher. He ( teach) taught Chemistry at a high school in the country.

5, Last summer my family (go) went on a sightseeing tour of Ho Chi Minh city.

6, This morning I (get) got up at 6.30 and didn't have enough time for break fast so now I (be) am very hungry.

7, Last night the boy had a good night's sleep. He ( sleep) slept nine hours.

8, Did You (remember) remember to lock the door before (go) going to work? - Oh, my God! I (forget) forgot

9, Our teacher ( come ) came to school late yesterday.

10, Did You (play) play chess with Tom last night?

11, Don't go out! It ( rain ) is raining very heavily.

12, We often (have) had dinner at home last year.

13, My mother (make) is making cakes for us now.

14, Where is your sister (be) ? She (do) is doing her homework in her room.

15, She doesn't like (eat) eating sea food.

P/s: câu 14 .... mình nghĩ đề phải thêm doing sau sister thì hợp hơn.

Mình có auxin đâu ... vì mình không bt nên khôn dám ghi bừa

a) Áp dụng định lý Py-ta-go cho tam giác vuông ABC, có:

\(AC^2+AB^2=BC^2\Leftrightarrow CB^2=5^2+12^2=169\Rightarrow CB=13\)

b) 2 tam giác bằng nhau trường hợp c.g.c

c) Do đây là 3 đường trung truyến => đồng quy tại 1 điểm

Do \(a,b,c\le1\)

\(\Leftrightarrow\left(1-a\right)\left(1-b\right)\left(1-c\right)\ge0\)

\(\Leftrightarrow\left(1-a-b+ab\right)\left(1-c\right)\ge0\)

\(\Leftrightarrow1-a-b+ab-c+ac+cb-abc\ge0\)

\(\Leftrightarrow1\ge a+b+c-ab-ac-cb+abc\)

Với m lẻ => \(m^{2n-1}\) là lẻ .

Mà \(2^{n+2}\) lại là chẵn \(\Rightarrow m^{2n-1}⋮̸2^{n+2}\)

Ta có:

\(P=\dfrac{\left(a+b\right)\left(b+c\right)\left(c+a\right)}{abc}=\dfrac{\left(ab+ac+b^2+bc\right)\left(c+a\right)}{abc}\)

\(=\dfrac{b^2\left(c+a\right)}{abc}=\dfrac{b\left(c+a\right)}{ac}=\dfrac{bc+ab}{ac}=\dfrac{-ac}{ac}=-1\)