[ Grammar ]
I arrived over an hour late to the office and everyone was working. Actually, they (work) for over two hours on the new project and I felt really guilty.
A. were working
B. had worked
C. had been working
D. worked

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Present Tenses › ViewI ____ in London for 15 years.
A. live
B. am living
C. have been living
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The storm took the house in its teeth and shook it.
A. Simile
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Prepositions › View
She wrote a letter of complaint …. the manager.
A. between
B. on
C. of
D. to
