Your laptop was more expensive than mine. (not as ... as)
My laptop wasn't as expensive as yours.
These flowers are ......... (pretty) than the ones in the florist's.
prettier
In Vietnam, riding a motorbike is ..... (convenient) than driving a car.
more convenient
I'm taller than my brother. (not as ... as)
My brother isn't as tall as me.
The phone signal is ....... (good) here than inside the house.
better
My ....... (bad) mark last term was for Maths.
worst
I bought .... (intelligent) robotic vacuum cleaner in that shop.
the most intelligent