______(61)
A.others
B.The other
C.The others
D.other

______(63)
A.mixture
B.roll
C.connection
D.fix

______(64)
A.apart
B.instead
C.inside
D.aside

______(66)
A.puts
B.places
C.fits
D.adds

______(69)
A.turn
B.pass
C.set
D.blow

______(70)
A.same
B.then
C.too
D.so

It can be concluded from the passage that lighthouses with day- marker patterns would most likely be found in areas where_______.
A.the structure themselves cannot be easily seen by passing mariners
B.there are not many lighthouses
C.the weather is frequently bad
D.there are a number of lighthouses with similar structures

The author implies that, compared to those of the past, contemporary lighthouses ______.
A.require less maintenance
B.are more difficult to operate
C.are more romantic
D.employ more powerful lights

During 1700s, Philadelphia developed into the wealthiest city in the American colonies.
A.during 1700s
B.developed
C.wealthiest
D.American

While we're on vacation, Mary will look after the dog.
A.If we go on vacation, Mary will stay at our house.
B.Mary will be looked after while we're on vacation.
C.Mary will take care of our dog while we're on vacation.
D.we're going to buy a dog for Mary after returning from vacation.