Error Identification
Electricity is the most (A) critical energy for the future of many countries and cheap, plentiful (B) electricity is associated for (C) high employment and productivity (D).
A.the most
B.plentiful
C.for
D.and productivity

Error Identification
Imagine an (A) entirely wireless world where (B) the Net is "always on, always there", we live in (C) endless sea of data, and objects are alive with intelligent (D).
A.an
B.where
C.in
D.intelligent

Error Identification
Future is a time when (A) most people assume (B) that everything will keep getting (C) better and future generations will enjoy life in a more better (D) world.
A.when
B.assume
C.getting
D.more better

Choose the best answer to complete each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.
_______technology is already present in the form of computers, printers, scanners, handheld devices, wireless technologies, and Internet connections.
A.A
B.An
C.The
D.Ø

Choose the best answer to complete each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.
With its long days, lack of _______ atmosphere, and wide-open spaces, _______ moon would also make an ideal place to put massive solar power plants.
A.Ø / a
B.an / the
C.the / a
D.an / Ø

Choose the best answer to complete each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.
Within _______ few years, _______ private space travel has gone from concept to reality.
A.Ø / an
B.the / the
C.the / a
D.a / Ø

1939/ she/ family/ move/ America.
A.In 1939, she and her family moved to America.
B.In 1939, she and her family moves to America.
C.To 1939, she and her family moved to America.
D.In 1939, she and her family moves America.

Choose the best answer to complete each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.
What are your plans for _______ future?
A.a
B.an
C.the
D.Ø

Choose the best answer to complete each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.
She has a promising future ahead _______ her.
A.for
B.from
C.on
D.of

Choose the best answer to complete each unfinished sentence, substitutes the underlined part, or has a close meaning to the original one.
He is very worried _______ his new job because he is not quite prepared _______ working.
A.on / over
B.to / off
C.about / for
D.in / at