Lucy is a(n) ______ student. She answers the teacher’s questions ______ in her class.

The backpack is_____ sale_____ only fifteen yuan.

Could you_____ me this book please, Daniel— Sorry, but I_____ it for only half an hour. I haven’t finished it.

Optimism had been growing ________ the weekend meeting of European Union leaders in Brussels would come up with a substantial plan for dealing with the debt crisis.[ ]

The old man showed us how to _____ part of the surfaceof the wood and let a pattern in.