According to the narrator, how will life end? (from the story exhalation)
a. clocks will stop working, and time will end.
b. sources of argon will dry up.
c. air pressure will equalize, preventing the movement of air.
d. memories will fill the brain to capacity.

Which sentence is written using formal language? a) erin has a crucial appointment early monday morning. b) that was a real bogus tale charlie told the teacher. c) let me have a sneak-peak or i am simply gonna explode. eliminate d) i do not think tim will be here today; he's playing hookie.

Which change should be made to improve this sentence? allen jumped in the puddle and his new shoes got wet and muddy.a)the new shoes got wet and muddy and allen jumps in the puddle.b)allen jumped in the puddle and got his new shoes wet and muddy.c)allen jumped in the puddle and gets his new shoes wet and muddy.d)the new shoes are getting wet and muddy and allen jumped in the puddle.

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