[ Vocabulary and Grammar ]
Solar power seems like a great future source of energy, ___________ it has some
disadvantages. For example, it doesn’t work at night.
A. and
B. but
C. so
D. because

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Finite and Non-Finite Verb › ViewWhich word is finite verb?
“To err is human, to forgive, divine.”
A. to err
B. is
C. to forgive
D. human
E. divine
Tenses › View
His English was perfect. He —– it since he started school.
A. was studying
B. studies
C. had been studying
Vocabulary & Grammar › View. What is a “chamber”?
A. A chamber is a type of musical instrument.
B. A chamber is a type of food storage container.
C. A chamber is a closed space or room.
D. A chamber is a method of communication.
Vocabulary › View
an initiative by a company to attract customers and increase sales
A. sales
B. audio
C. campaign
