[ Vocabulary and Grammar ]
The company is ____ following several complaints.
A. in investigation
B. on investigation
C. under investigation
D. with investigation

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A. give up
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Comparison › View
Of the two essay, this one is _________.
A. better
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C. the best
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Grammar › ViewThere is no need to get _____ just because I’m a few minutes late.
A. annoyed
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They said they were innocent. They denied ………… anything wrong.
A. doing
B. do
C. to do
