7. No one can imagine a more frightening illness than AIDS.
->AIDS is the most frightening illness.
8. Flu is more serious illness than a cold.
-> A cold is less serious thab flu.
9.Linh can play than guitar better than Nam.
-> Nam can play guitar worse than Linh.
10. You have never met any girl more beautiful than Thu Thuy.
->Thu Thủy is the most beautiful you have met.
12.I can't speak French as well as my friend does.
->My friend speak French better than me.

Thank you very much^^

1. Cairo is much hotter than London in July
->London is not as hot as as Cairo in July
2.There is a less rain in Tokyo than in Athen in January
-> More rain is in Tokyo than in Athens in January
3. There are fewer rainy days in Buenos Aires than in New York.
->There aren't as many rainy days in Buenos Aires as in New York.
4. The amount of rainfall is similar in London and New York.
->About the same rain falls in London and in New York
5.Summer nights in Cairo are muchs warmer than those in London
->In London summer nights aren't as warm as in Cairo
6.A broken leg is more serious than sprained wirst.
->A sprained wirst is not as serious as a broken leg
7. No one can imagine a more frightening illness than AIDS.
->AIDS is the most frightening illness that everyone can imagine
8. Flu is more serious illness than a cold.
-> A cold is less serious illness than flu
9.Linh can play than guitar better than Nam.
-> Nam can't play guitar as well as Linh
10. You have never met any girl more beautiful than Thu Thuy.
->Thu Thủy is the most beautiful girl you can have ever met
11. Her mother speaks more persuasively than her aunt.
->Her mother is a more persuasive speaker than his brother
12.I can't speak French as well as my friend does.
->My friend speaks French better than me