Calculations，which are astronomically exact，have been made ________ with the use of computers.
| A．possible | B．it possible |
| C．possibly | D．to be possible |
—How come a simple meal like this costs so much?
—We have ______ in your bill the cost of the cup you broke just now.
| A．added | B．contained | C．charged | D．included |
__________comes to see me, tell him I’m out.
| A．Someone | B．Who | C．Whoever | D．Everyone |
Use your head， you’ll have an idea.
| A．or | B．and | C．but | D．so |
. There are students in our schoo1.
| A．three thousand | B．three thousand of | C．three thousands | D．three thousands of |
Some people find the film Avatar difficult______.
| A．to understand | B．to be understood | C．understood | D．being understood |