His first lecture is of great use to our development. But his latest one is ______ worth attending.
---What _______ do you have for Daniel?--- I think he should study harder than before.
--- I take the book out?---I'm afraid not.
_______ that he was in great danger, Eric walked deeper into the forest.
_____twice, the postman refused to deliver our letters unless we chained our dog.
We are invited to a party______ in our club next Friday.