He watched Journey to the West last night.He thought it was one of _______ TV programs.( )
A.interestingB.more interesting
C.most interestingD.the most interesting
I think it's impolite _______ others waiting.( )
A.to keepB.keepingC.keep
I cleaned my room yesterday. It _______ a little difficult.( )
A.isB.wasC.will be
Mountain climbing is one of _______ sports in the world.( )
A.dangerousB.more dangerous
C.the most dangerous
Are these your books?
No, they aren't. They are _______.( )
A.sheB.hersC.her
What's this?
It's _______ watch.( )
A.aB.anC.the