isn't raining

2. strong  -   stronger   -   the strongest
3. short   -   shorter    -    the shortest
4. thin   -   thinner   -   the thinnest
5. cold   -   colder   -    the coldest
6. wet   -   wetter    -    the wettest
7. light    -    lighter    -    the lightest
8. dark   -    darker    -    the darkest 
9. good   -   better   -    the best
10. late    -    later     -    the latest

\(\dfrac{1}{4}+\dfrac{2}{3}=\dfrac{3}{12}+\dfrac{8}{12}=\dfrac{11}{12}\)

A

_{jz ba} :))

(-) My school doesn't have four floors.

1A
2B
3C
4C
5B
6A

40) "You mustn't walk on the grass!" I'm sorry,

a.   I won't do it again.

b.  I will have a cup of tea.

c.   We aren't ready.

d.  They don't pick the flowers.

41) What are you doing in the kitchen?

a.   We are going for a walk on the beach

b.  I'm making a cake

c.   I'm cleaning the house

d.  I go by bicyvle

42) People need calories or to do everything every day.

a.   Food

b.  Energy

c.   Drink

d.  Strong

43) If people want to keep they should remember that every person should have between 1600 and 2500 calories a day

a. Health

c.  Active

d.  Money         sao hổng thấy b :))

44) All of them enjoy to pop music.

a.   Listen

b.  Listens

c.   Listening

d.  Listened

45) It is dangerous too fast

a.   Driving

b.  Drove

c.   To drive

d.  Driven

Ta có:   \(\dfrac{2022}{2021}>1\)
 

             \(\dfrac{2021}{2023}< 1\)

\(\Rightarrow\dfrac{2022}{2021}>\dfrac{2021}{2023}\)

\(15-3.x=6\)
\(\xrightarrow[]{}3x=15-6\)
\(\xrightarrow[]{}3x=9\)
\(\xrightarrow[]{}x=9:3\)
\(\xrightarrow[]{}x=3\)

\(x+21:7=6\)
\(\xrightarrow[]{}x+3=6\)
\(\xrightarrow[]{}x=6-3\)
\(\xrightarrow[]{}x=3\)

\(44+x:3=50\)
\(\xrightarrow[]{}x:3=50-44\)
\(\xrightarrow[]{}x:3=6\)
\(\xrightarrow[]{}x=6.3\)
\(\xrightarrow[]{}x=18\)