---I feel tired and sleepy.
---Why not stop_____?
| A．to relax | B．relaxing |
| C．resting | D．to work |
She jumps _____of us four.
| A．far | B．farther |
| C．farthest | D．further |
Lingling comes ______than any other student in her class every day.
| A．very earlier | B．much earlier |
| C．early | D．more earlier |
_______is really difficult for them_______the mountain.
| A．This,climbing | B．This,to climb |
| C．It,to climb | D．It,climbing |
I like skiing better than climbing because I think climbing is ________ skiing.
| A．not as exciting as | B．not as more exciting as |
| C．not as most exciting as | D．more exciting than |