A : what do you think of my drawing ?
B : i think it's very good. it's very colorful.

A : what is your opinion about my car ?
B : i think your car is very expensive

A : It's a good bag, Isn't it ?
B : yes, it is.
A : hello b, can you apreciation my cake ?
b : hai b, ok that cake is good but you must make more decoration on your cake
a: thank b, now my cake is more beautiful
b : you don't have to say it