___ infinitely large number of undiscovered galaxies.
a. An
b. There are an
c. From an
d. Since there are
b. There are an
___ perhaps the most awe inspiring among the great structure of the world.
a. The Great Wall of China
b. The Great Wall of China which is
c. The Great Wall of China is
d. That the Great Wall of China is
c. The Great Wall of China is
Plants known aso adaptogens improve human visibility, eliminate bstress, and csustain live in the most arduous dconditions.
a. as
The afiring of bricks and tiles bfor use in the cbuild industry requires large damounts of fuel.
c. building
aMost babies will grow bup to be as ccleverer as their dparents.
c. clever
___ is as simple as it looks.
a. Adobe houses building
b. Adobe houses which are built
c. Building adobe houses
d. Adobe houses built
c. Building adobe houses
A fine tomb, ___, marks the grave of the poet Chaucer.
a. which in the the fifteenth centruy was erecting.
b. erected in the fifteenth century
c. erecting in the fifteenth century
d. being erecetd in the fifteenth century.
b. erected in the fifteenth century
aThere is estimated that bthe Orion nebula contains cenough matter to form 10,000 dstars.
a. It
The rings aof Saturn are bso distant to cbe seen from Earth dwithout a telescope.
b. too
Sprinkler asystem have proven to be bthe most effective cmeans of dfighting hotel fires.
a. systems
___ The Dartmoor ewe and the Dumpy hen, the Tamworth pig is a rare breed of farm animal.
a. How
b. Like
c. The
d. Even
b. Like
No matter ___, Mozart was an accomplished composer while still a child.
a. how remarkable it seems
b. how it seems remarkable
c. how seems it remarkable
d. how it remarkable seems
a. how remarkable it seems
The acinecamera bhas become obsolete since cits invention of video recording dtechnology.
c. the
For amore than 450 years, Mexico City has been the economic, bculture, and political center of cthe Mexican dpeople.
b. cultural
aIn 1927, Charles Lindbergh completed ba solo ccrossing of the Atlantic Ocean in dits aircraft, the spirit of St. Louis.
d. his
___ in the planet Uranus dates from its discovey in 1781 is not surprising.
a. That scientific interest
b. It was scientific interest
c. Through scientific interest
d. Scientific interest
a. That scientific interest
Square-rigged ships, ___ high speeds only when traveling with the trade wins, are not used commmercially nowadays.
a. can attain
b. when attaining
c. they can attain
d. which can attain
d. which can attain
A new battery afor domestic appliances bin the house is cas thin and dflexible as paper.
b. erase (in the house)
aMeasles has not byet been eradicated cbecause of dcontroversial concerning immunization.
d. controversy
aOne out of bevery eight balloons cin the world dare launched at Alburquerque, New Mexico.
d is launched
Not until about a century after Julius Caesar landed in Britain ___actally conquer the island.
a. the Romans did
b. did the Romans
c. the Romans
d. Romans that
b. did the Romans
___ often serve as places of public entertainment and festivals, they can also be placed where people can find peace and solitude.
a. Even though city parks
b. City parks
c. City parks that
d. There are city parks which
a. Even though city parks
America's first asatelites exploded bbefore it had crisen three nd a half dfeet off the ground.
a. satelite
The main routes aused by the pony express bwere equipped with cstops providing stables, lodging, and deating.
d. food
The Victorian constructions of Haight-Ashbury are aamong the bfewer architectural csurvivors of the San Francisco earthquake din 1906.
b. few