All the students ______ to inform their parents _______ the mid-term exam results.
He left ______ with my secretary that he would call again in the afternoon.He said he would keep ______.
I sat until after eleven,______in a book.
The workers will go on strike if the demands they ______ put forward are turned down.
The small grocer was at the ______ of the people he owed money to.
Green products are becoming more and more popular because they are environmentally ______.