2. perfectly

3. fastly

4. carefully

5. nervous

6. fluent

7. badly

8. terrible

9. angrily

10. happy

2. perfecly

3. fast

4. carefully

5. nervous

6. fluent

7. badly

8. terible

9. angrily

10. happy

1. f

2. g

3. b

4. e

5. a

6. c

7. d

Reorder the following words to make meaningful sentences

1. it /travel/is/rush/because/in/so/on/to/

traffic /road/tiring /hours/jams/of

It is so tiring to travel on road in rush hours because of traffic jams

2.it /hour/to/took/office/yesterday /more/my /than/mother/an /to /go/her

It took my mother more hour than her to go to an office yesterday

3.from/Hochiminh city/traveling /not /time -consuming/to/by /Hanoi/airplane /is

Traveling by airplane from Hanoi to HCM City is not time -consuming

#Yumi

1, c, on

2, , c , in

3, b, inside

4, c, themselves

5, d, should

6, b, because

7, d, orphanage

8, c, would

9, a, annoys

10, a ,. mechanic

Bài 5:

a: Ax//By

=>\(\hat{A_1}+\hat{B_1}=180^0\) (hai góc trong cùng phía)

=>\(\hat{B_1}=180^0-140^0=40^0\)

b: Ta có: \(\hat{B_1}+\hat{B_2}=\hat{ABC}\) (tia By nằm giữa hai tia BA và BC)

=>\(\hat{B_2}=90^0-40^0=50^0\)

c: Ta có: \(\hat{B_2}+\hat{BCz}=50^0+130^0=180^0\)

mà hai góc này là hai góc ở vị trí trong cùng phía

nên By//Cz

=>Ax//Cz

d:

Gọi O là giao điểm của Cm và Qn

PQ là đường trung trực của AB

=>PQ⊥AB

mà BA⊥BC

nên PQ//BC

=>\(\hat{PQC}+\hat{BCQ}=180^0\)

=>\(2\left(\hat{OQC}+\hat{OCQ}\right)=180^0\)

=>\(\hat{OQC}+\hat{OCQ}=90^0\)

=>ΔOCQ vuông tại O

=>Cm⊥Qn tại O