Checkpoint 1: Each of them ___________ a different character. (A: have     B: To have           C: having        D: has)

Checkpoint 2: The audience didn't laugh ___ his joke. (A: at         B: on             C: to           D: for)

Checkpoint 3: Her new glasses change her ____. (A: appear         B: appears         C: appearance          D: appearances)

Checkpoint 4: A child whose parents have died is called a(n) ____. (A: nephew         B: cousin         C: neighbor          D: orphan)

Checkpoint 5: The lost girl has_________ (A: Short black hair            B: a short black hair         C: hair short black          D: All are correct)

Checkpoint 6: Don't come in. Please wait ______ for a few minutes (A: inside       B: outside          C: insides          D: outsides)

Checkpoint 7: Let's go out for meal.-________. (A: Yes, I am sorry              B: I'd love to             C: Thanks, Idon't go                D: You're welcome

Checkpoint 8: How about _________ the clothes (A: wash           B: to wash           B: washing           C: washes)

Transformation

1. She is traveling to school by bike

→ (cycle) She cycles her bike to school .

→ (ride) She rides her bike to school .

2. Is he traveling to HCM City by air?

→ Is he going to HCM by air ?

Điền giới từ thích hợp vào chỗ trống:

  1. You can find the physics books at the back of the library.

  2. The United States' Library of Congress is in Washington Dc. 

Transformation

1. Does she walk to work ?

→ (foot) Does she go to work on foot ?

2. We have more children but less money than them.

→ They have fewer children but money than us .

1,we / in / Da Nang / city / in / house / a / live /.(sắp xếp thành câu hoàn chỉnh)

=> We live in a house in Da Nang city .

2,This is my pencil.(chuyển câu sang hình thức số nhiều)

=> These are my pencils .

3,My sister and I are teachers.(thay cụm từ gạch chân bằng 1 đại từ nhân xưng thích hợp)

=> She and I are teahers .

4,Mr Nam is an engineer.(chuyển câu sang thể nghi vấn)

=> Is Mr. Nam an engineer .

5,That is a eraser.(sửa lỗi sai trong câu)

a => an

6,How old is your father?(trả lời câu hỏi)

=> My brother is ......... years old .

I. Rewrite the sentence without changing it's meaning:  

1. The boy looks thin but he is very strong.

=> Although the boy looks thin , he is very strong

2. No one can solve the problem.

=>This problem is very difficult to solve

3. May I borrow your pen? 

=> Would you might borrow your pen ?

4. I fell asleep because the film was very boring.

=> The film was so boring that I fell asleep .

5. Henry regretted buying the second hand car.

=> Henry wished she can buy the second hand car .

6. She didn' t go to school yesterday because her mother was sick. 

=> Because of her mother was sickness , she didn't go to school .

2^x+1.3^y=12^x => 2^x+1.3^y=4^x.3^x

=> 2^x+1.3^y=2^2x.3^x => x + 1 = 2x và y = x

=> x = 1 và y = x = 1

Vậy........

Nửa chu vi đáy của bể nước là:

7,5:2=3,75(m)

Chiều rộng bể nước là:

(3,75-0,6):2=1,575(m)

Chiều dài bể nước là:

3,75-1,575=2,175(m)

Thể tích bể nước là:

1,575x2,175x1,5=5,1384375(m³)

Đổi5,1384375(m³)=5138,4375(dm³)=5138,4375(lít)

Số nước đã dùng là:

1,2x1,575x2,175=4,11075(m³)

Đổi 4,11075(m³)=4110,75(dm³)=4110,75(lít)

Vì 1 tuần có 7 ngày => Số lít nước dùng trong 1 ngày là:

4110,75:7=587,25(lít)

1. He failed in the race -> He didn't won in the race

2. The cake was so hard that I could not eat it -> It was difficult to eat .

3. I would like you to help me to put the chairs away -> Do you mind if i to put the chairs away.

4. Thank you for helping me -> It was kind to help me

Đáy bé = 8 m

Đáy lớn = 14 m

**** nha