Exercise 1: Rerwite the following sentences that keep the same meaning.

1. You should take the train instead of the bus.

-> If..............I were you, I'd take the train instead of the bus........ ..................

2. I'm sure that someone forgot to lock the door.

--> Someone must.............. have forgotten to lock the door.........................

3. They bought this house ten years ago.

--> They have..................... had/ owned this house for ten years................... .....

4. The course finished with a big party.

--> At the end................. of the course, there was a big party................. ....

5. We invited a pop star onto the chat show, but he didn't turn up.

--> The pop star...that/ who/ whom we invited onto the chatshow didn't turn up.......... ..

6. Although she said that she would come, I don't think she ever will.

—> Despite.....her saying that she would come, I don't think she ever will..... ...........

7. The plane had hardly left the airport when the accident happened.

--> No sooner......... had the plane left the airport than the accident happened................ .......

8. You feel tired now because you didn't sleep very well last night.

-> Had..............you slept well last night, you wouldn't feel tired now..............

9. When did you start the project?

—> How long...............is it since you started the project ?.......... ....

10. Their wedding will be held in a lovely church.

--> The church.............where their wedding will be held is lovely......... ......

Câu 8

abc + 1000 > a12 + 1b2 + 23c 

Gọi hai phân số đó là \(\frac{a}{b}\) và \(\frac{c}{d}\).

Theo đề bài ta có: \(\frac{a}{b}+\frac{c}{d}=3.\left(\frac{a}{b}.\frac{c}{d}\right)\)

\(\Leftrightarrow\frac{ad+bc}{bd}=\frac{3ac}{bd}\Leftrightarrow\) ad + bc = 3ac

Tổng các số nghịch đảo của hai phần số này là:

\(\frac{b}{a}+\frac{d}{c}=\frac{bc+ad}{ac}=\frac{3ac}{ac}=3\)

đổi 1, 6 dm= 16 cm; 1,4 dm= 14 cm 
Thế tích của khối hình hộp chữ nhật đó là:
16 x 14 x 9= 2016( cm³)
Thể tích một khối hình lập phương nhỏ có cạnh 1 cm là:
1 x 1 x1= 1 (cm³)
Số hình lập phương nhỏ dùng để xếp hình hộp chữ nhật đó là:
2016 : 1= 2016 ( hình)
Đáp số: 2016 hình

IV. Cho dạng đúng của từ trong ngoặc
1. There are lots of (beauty).beautiful................................. beaches in Viet Nam.
2. Is Mr.Ha a (business)...................businessman............ ?
3. She’s from Viet nam. What’s her (nation)..........nationality......................?
4. Air (pollute).pollution................................. is a big problem in the big cities.
5. In the (neighbor) .....neighbor.............................., there is a hospital and a factory.

V. Điền một giới từ thích hợp vào chỗ trống nếu cần
1. A few people are on…………. the mountain and they are in… danger.
2. I have to stay..…late because I don’t finish ……. my homework.
3. My father always goes to work ……on…… his own car.
4. Our school starts …at…….. six forty five to eleven o’clock.
5. The beef is on the table next to…….. the eggs and the fish.

III. Viết lại câu sau sao cho nghĩa không đổi.
1. Lan’s hair is long.
-> Lan has the long hair……………................…………..
2. Nam rides his bike to school everyday.
-> Nam goes to school by bike everyday………………..............…..
3. Are there four people in your family?
-> Does your family have four people………………….…….............?
4. Nobody in our class is happier than Nga.
-> Nga is the most happy in our class………..……..……….............
5. Let’s go swimming.
-> What about …swimming……………................?
6. My house is behind the post office.
-> The post office …is in front of my house…………...............
7. She likes drinking milk.
-> Milk is liked driking by her…………………...............
8. Ba has a sister, Lan.
-> Ba's sister is Lan…………………………...............
9. What’s the height of the Mount Everest?
-> How …high the Mount Everest is……………………...............?
10. This boy is strong.
-> He is……………strong .....

Câu 1. Chọn dạng đúng của động từ trong ngoặc

1.What will they (do)......do........tonight? - They (listen).....will listen......to music on the radio.

2.Your brother (can,swim)...can swim.......?- Yes,he can. He (swim)......swims.....very well.

3.He (be)......is .......tired and he'd like(sit).......to sit.....down.

4.Hoa (not do).........her homeword in the afternoon. She do).............it in the evening.

5.Look! The plane (fly..............towards the ariport.It (land).................

Câu 2. Điền giới từ thích hợp cho mỗi câu sau:

1.I live (1)................... a small house (2) ......................the countryside.

2.My house is(3)...................a bookstore and a toystore:the bookstore to the left and the toystore to the right.

3.Miss Mai want a kilo...............(4)meat and a doren (5)..............eggs.

4 Nga goes(6)..................school(7)...............foot every morning and she goes(8).................home(9)...........four thirty in the afternoon.

5. Who do you usuaaly play badminton(10).................

trẻ_trâu.....chẩu_tre 

Dear Mai
I am visiting Ha Long Bay with my family ....on............… June 12th to 20th. …(2)..............Do...… you have a double room with a shower for these days? How …(3)........much....… is the room? We would like …(4)…...........stay........ room facing the sea if it is possible. We …(5)....don't............… eat meat but we …(6).........eat.......… all other kinds of food.
We are arriving …(7).to............… Ha Long Bay …(8)........at..........… about six o’clock on Monday evening. We plan to leave the hotel …(9)…..........on..........Sunday morning.
I …(10).........am...............… forward to hearing from you soon.
Love
Nga.