2 - a) The t-shirt is more modern than the blouse.

2 - b) The house is higher than the building.

2 - c) The plane is faster than the car.

2 - d) The sofa is more comfortable than the chair.

2 - e) Lisbon is bigger than the Oporto.

2 - f) German is more difficult than the English.

2 - g) The River Tagus is longer than the River Douro.

2 - h) A diamond ring is more expensive than a golden ring.

3 - a) China is most populous country in the world.

3 - b) "Mona Lisa" is most famous painting by Leonardo da Vinci.

3 - c) Mouth Everest is highest mountain in the world.

3 - d) Australia is smallest continent of all.

Espero ter ajudado, bons estudos! (❁´◡`❁)❤