'You should have finished the report by now.' John told his secretary.
A.John said that his secretary had not finished the report.
B.John reproached his secretary for not having finished the report.
C.John scolded his secretary for not having finished the report.
D.John reminded his secretary of finishing the report on time.

Increased consumption will lead to faster ______ of our natural resources.
A.exhausting
B.exhaustive
C.exhaust
D.exhaustion

If people stop destroying animal’s natural habitat, more species will survive and produce ______.
A.offspring
B.landscape
C.ecology
D.benefit

Engineers at Red Motors have just created the corporation's first car _______ by solar energy.
A.powerful
B.powering
C.powered
D.power

Our solar system is in a galaxy_______ the Milky Way.
A.calling
B.
C.called
D.which called

In many parts of the United States, large areas of land have been made into national parks to protect and __________ the natural beauty of the land.
A.preservation
B.preserve
C.preservable
D.preservement

There are a number of safety procedures ______ which you should be aware.
A.about
B.in
C.of
D.on

Choose the underlined part among A, B, C or D that needs correction.Despite of (A) a language barrier, humans (B) have managed to communicate with others (C) through sign language, in which (D) certain motions stand for letters, words, or ideas.
A.Despite of (A)
B.in which (D)
C.with others (C)
D.humans (B)

Radio stations at which (A) broadcast only news (B) first appeared (C) in the (D) 1970s.
A.appeared (C)
B.only news (B)
C.at which (A)
D.in the (D)

JKL Motorbikes sells (A) six different models, the first which (B) they started (C) making (D) in 1985.
A.which (B)
B.started (C)
C.making (D)
D.sells (A)