You are assigned to be the moderator of a group discussion about a short story you’ve read. after about ten minutes, the participants begin going off topic and interrupting each other. what is the best solution for getting the group back on track?
a) speak loudly to command attention, announcing that people must follow directions.
b) listen closely, smile, and add your opinion when you find a good time to talk.
c) let the speaker finish, review the ground rules, and ask the group a new question.
d) open to a good page of the short story, read it to yourself, and wait for a quiet moment.

The “big dig” the “big dig” (the central artery/tunnel project) has been complex and challenging. located in boston, massachusetts, this tunnel is eight lanes wide and three-and-a-half miles long. what is most amazing about this tunnel is that it is constructed under a major highway and skyscrapers located in boston’s financial district. construction crews used “clamshell excavators” during this dig. these machines carved narrow trenches, and then a special substance was pumped into the trench to keep the dirt from caving in. finally, steel beams were lowered into the trench and concrete was pumped in. one problem that engineers faced while constructing the tunnel is the fact that the soil beneath boston is extremely loose and soggy. engineers solved this dilemma by freezing the soil and pumping very cold water into pipes beneath the city. to strengthen the soil even further, a special type of glue was injected into the ground to with the consolidation of the soil. 23 which phrase best defines the word excavator as used in the passage? a. a device used to measure underground temperatures b. a device used to level uneven surfaces c. a device used to move heavy objects d. a device used to dig holes