1. remembers => remember

2. not => don't

to do => doing

hour => hours

3. either => too

4. badly => bad

run => runs

Có điều kiện a khác b k bạn 

a. Nam/ get up/ five/ morning.

=> Nam gets up at five o'clock in the morning.

b. What time/ you/ have/ lunch?

=> What time do you have lunch?

c. Chi's school/ small.

=> Chi's school is small

d. How many/ classes/ your school?

=> How many classes are there in your school?

e. Is/ your house/ city/ or/ country?

=> Is your house in the city or the country?

f. Her name/ Thuy.

=> Her name is Thuy

g. There/ lamp/ living room.

=> There is a lamp in the living room.

h. There/ twenty/ books/ bookself.

=> There are twenty books in/on the bookshelf

i. This/ my teacher.

=> This is my teacher

j. they/ couches.

=> They have many couches

Theo em, con đường nào là con đường tốt nhất để hạn chế gia tăng dân số?

A. Nâng cao dân trí, tăng cường giáo dục tuyên truyền. Đặc biệt là đẩy mạnh giáo dục cho phụ nữ là hạ thấp tỉ lệ thụ thai cũng như tỉ lệ tử vong và tỉ lệ mắc bệnh

B. Khuyến khích người dân lập gia đình muộn

C. Đề ra chỉ tiêu mỗi gia đình chỉ có một đến hai con

D. Câu A, B đúng

correct the mistakes : there is one mistake in each sentence. Find it and correct it:

a.I am on grade 6.

on => in

b. He usually get up at six  o'clock .

get => gets

c. There are forrty-two student in my class.

student => students

d. It is new school.

=> new school => a/sở hữu school

e. She washes the teeth.

washes => brushes

f. My sister goes to school at the moring.

at => in

g. Where do she live.

do => does

h. She is sixteen year old.

year => years

i. He have Literature on Monday and Thursday.

have => has

j. My brother doesn't goes to school until he is five.

goes => go

bài này làm rồi, nghe sến qá k muốn lm nữa

Theo đề bài ta có

x+1/5-1/9+1/9-1/13+.........+1/41-1/45=-37/45

x+(1/5-1/45)=-37/45

x+8/45=-37/45

x=-37/45 - 8/45

x=-45/45

x=-1

\(A=1+2+2^2+....+2^{100}\)

\(2A=2+2^2+2^3+...+2^{101}\)

\(2A-A=\left(2+2^2+2^3+...+2^{101}\right)-\left(1+2+2^2+....+2^{100}\right)\)

\(A=2^{101}-1\)

1. Talking is the most popular activity at recess.

2. Nam often plays marbles with his friends at recess

3. Students learn how to use the computer in Computer Science Class

4. Students take part in many different  activities at recess

5. We leant about the past events of Viet Nam before1945

I like E.L