Chuyển sang câu bị động:
He can do this exercise quickly

Rút gọn:
a)\(\dfrac{2}{2x+1}-\dfrac{1}{2x-1}+\dfrac{4}{4x^2-1}\)

b)\(\dfrac{4x^2-3x+5}{x^3+1}-\dfrac{1-2x}{x^2+x+1}-\dfrac{6}{x-1}\)

\(\dfrac{x+2}{x-3}\)-\(\dfrac{5}{x^2+x-6}\)+\(\dfrac{1}{2-x}\)

Choose the incorrect part indicated by A,B,C,D in the following sentences.(Chữ in nghiêng lần lượt từ trái sang phải là A, B, C, D)
1. He has moved to a new apartment and he is satisfied with it because it has many furnitures.
2. My father intends to buy a house which is large enough for six of us to live.
3. The painting was hung in the hall was painted by a famous artist and was considered as a masterpiece
4. Anne told me if I could play the violin and I answered I couldn't
5. The increase in population has led to overcrowding in many cities and put a strin in schools and hospitals

Word form
1. Thanks to his(wise) ............., he managed to chase away the tiger
2. (represent) Many ................ from ASEAN countries have come to participle in the event
3. (amaze)What an ............. performance! I really appreciate it.
4. (suit) I think you can't wear these clothes to the party. They are quite .................
5.(live) People said he had died two years before. In fact, he is still .................
6. (intend) In making glass, they blow the prepared liquid into ............... shapes
7. (describe) Santa Claus is based on the .............. of Saint Nicholas in the poem called A visit from Saint Nicholas
8. (compete) In the rice-cooking festival, there are three .............. :water-fetching, fire-making and rice-cooking
9. (neighbor) People in my .......... are concerned with the new shopping mall
10. (invent) Who do you think is the greatest ........... of all time?