单项选择题
A．It limited their supply of food. B．It killed many baby bald eagles. C．It destroyed many of their nests. D．It made their eggshells too fragile.
A．Fix his car. B．Prepare the dinner. C．Meet his client. D．Work at his office.
A．The organization of a conference. B．The decoration of the conference room. C．The job of cleaning up the dining-room. D．The cost of renting a conference room.