Can I have __________ more food? — Sorry. There is not__________ in the fridge.

He didn’t work ________ the other students in his class, so he got the worst report card for the end-of-year exams.

It’s hard for them to walk _____ the forest. [ ]

It is only when agriculture is fully developed___________industry can have abundant materials and markets.

__________knowledge comes from practice is known to all.