---Why you are so worried?
--- I ___for my little son all the afternoon, I don’t know why he hasn’t come back so late.
| A．am waiting | B．have waited | C．have been waiting | D．waited |
— Have you handed in your schoolwork yet?
— Yes, I have. I guess it ______ now.
| A．has graded | B． is graded | C． is being graded | D． is grading |
At the end of the meeting, it was announced that an agreement ______.
| A．has been reached | B．had been reached | C．has reached | D．had reached |
Please keep me _____ what happens.
| A．informing by | B．informing of | C．informed of | D．informed by |
______ the chairman of the council, the vice chairman does duty for him.
| A．Absent from | B．In the absence of | C．Present from | D．In the presence of |
In the competition to be held, a gold medal, together with a certain sum of money, _____ the champion.
| A．will be given to who will win | B． will be given to whoever will become |
| C．has been given to whoever wins | D． was given to anyone who became |