We must try _____ people _____ the animals in danger.
A.stop,kill B.to stop,killing
C.to stop,to killing D.stop,to kill
--Mary,would you like to visit the Science Museum with me?
---_______,but surfing the net seems more interesting.
A.I’d love to B.That’s right
C.You’re welcome D.No problem
---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