I’ll let you know_____ I receive Brain’s e-mail message.

Though we have worked out the plan,the hardest part is putting it into       .

It was such a____to hear that all the earthquake victims in Chile have been taken good care of.

The children are full of ______. They have been playing all day long without resting.

He could have finished it on          , but he was ill last week and that was why he fell behind.