k Tom will ________ a good leader, so I’m going to vote and support him.

I couldn’t do it ________ your great help. Thanks alot!

_______on time, I think,the medicine will work on him before long[ ]

with so many challenges, Yang Guang, a blindyoung fellow, didn’t give up; he made great efforts to win success.

Luckily，we’d brought a road map without____we would have lost our way.