1. Nam is doing his homework

2.Yes, he does

3.Becase he want to be an English teacher

4. He watch English films on TV and listen to English songs

5.Yes, he is

6. He often write emails to Mịchael

viết câu sang câu bị động

1. The students has discussed the pollution problems since last week

2. How many languages do they speak in canada ?

3. My brother has been playing soccer for 3 hours

4. We will do our homework tomorrow

5. Mary was reading the novel at this time last night

6. Are you going to repair those shoes ?

7. You should turn off the lights before going out

8. Have you finished the above sentences

9. Do you buy the flowwers ?

10. Was she reading the book at this time last night ?

11. Tom going to visit his grand parents next week

12. Tom will visit his grandparents next week

viết sang câu bị động

1. They plant the trees around school

2. Mary closes her homework everyday

3. My mother is cooking the lunch right now

4. Tom has finished the work

5. Do they play soccer here ?

6. They are decoreting the house

7. People spend a lot of money on adventising everyday

8. He has written a novel forr two years

\(\frac{3}{10}+\frac{3}{40}+\frac{3}{88}+\frac{3}{154}\)

\(=\frac{3}{2.5}+\frac{3}{5.8}+\frac{3}{8.11}+\frac{3}{11.14}\)

\(=\frac{1}{2}-\frac{1}{5}+\frac{1}{5}-\frac{1}{8}+\frac{1}{8}-\frac{1}{11}+\frac{1}{11}-\frac{1}{14}\)

\(=\frac{1}{2}-\frac{1}{14}\)

\(=\frac{3}{7}\)

bài toán này làm = cách đứt ruột đó




thầy mk vừa dạy mk xong