My sister is two years__than me.
A.young B.so young C.younger D.the youngest
Do you know what__animal in the word is?
A.slow B.slow as C.slower D.the slowest
I think spring is__season of the year.
A.beautiful B.very beautiful C.more beautiful D.the most beautiful
Maths is__to me than biology.
A.important B.so important C.more important D.the most important