He has been _______ for three weeks. We’d better find another person to fill his place.
-------John and I will celebrate our fortieth wedding anniversary next month.--------Oh,!
I'm amazed to hear from my school teacher again.,it is ten years since we met last.
But for their help,we ______ the program in time.
We tried to find a table for seven,hut they were all .
a certain doubt among the people as to the practical value of the project.