The Princeton Review - Princeton Review PSAT 8_9 Prep-Random House Children's Books (2021)

4. A) NO CHANGE
B) they’re
C) they are
D) their
At that time, if someone 5 knocked on your door you
might have to look out a window (potentially allowing an
intruder to see who you were) or a small peephole. A
potential intruder could also be standing right outside the
door, and if he or she did not make a noise, you would
have no way to know that someone was there, preparing
to break in. If the person did try to break in, you would
have to run to the phone and call the 6 police this could
use up precious time in the days when most homes had
only one phone, with a cord.
5. A) NO CHANGE
B) knocked, on your door,
C) knocked on your door,
D) knocked, on your door
6. A) NO CHANGE
B) police, which
C) police, this
D) police. Which
In 1966, Brown, along with 7 Albert; filed a patent for
the first home security system. In Brown’s invention, a
door would have several peepholes with a camera looking
outside. The video would be transmitted to a monitor that
could be 8 placed, it was in any room in the house. This
would allow residents to see who was outside their door
without having to constantly look out. In addition,
Brown’s patent included a set of microphones to allow the
resident to talk to the person outside. A remote control