A. Although Watt spent much time and money in making experiments, nothing he tried succeeded.
B. Despite his failure after trial and trial, Watt spent much time and money in making experiments.
C. As Watt spent too much time and money in making experiments, nothing he tried succeeded.
D. If Watt hadn't spent much time and money in making experiments, anything he tried would have succeeded.
A. The difference between Engineering and Inventing lies in the process they are conducted.
B. Engineering finds solutions to problem, while inventing creates things not ever existing.
C. Engineering focuses on developing solutions to problems, but inventing centers on creating new things.
D. The result of engineering is the development of solutions to problems, but that of inventing is the creation of new things.
A. Significant contributions have been made by scientists and inventors to the live of the common people.
B. Scientists and inventors had contributed significantly to the lives of the common people.
C. The lives of the common people have been significantly constructed by scientists and inventors.
D. The contributions which scientists and inventors made to the lives of the common people was significant.
A. private
B. privately
C. privacy
D. privates
A. rights
B. ownership
C. patent
D. possession
A. special
B. specialty
C. specially
D. specialist
A. so
B. so that
C. than
D. rather than
A. took
B. came
C. carried
D. caught
A. provided
B. passed
C. offered
D. seized
A. to light
B. to be lit
C. to have lit
D. that lit
A. floor
B. step
C. stage
D. forum
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