[ Grammar ]
They got up too late, ______ they couldn’t catch the bus.
A. then
B. as
C. when
D. so

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Grammar › ViewIn ____ as well as in sciences, students use computers or equivalent devices to do research and write papers.
A. humans
B. humankind
C. humanity
D. humanities
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Kyoto and Osaka are two important ____________ in Japan.
A. citys
B. cities
Nouns Formation › ViewINVOLVE
A. involvence
B. involveness
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Vocabulary › View
Many farmers now grow vegetables using ______ methods to protect the environment.
A. industrial
B. traditional
C. equal
D. organic