[ Tenses ]
When the professor __________ (finally/arrive) at the lecture hall, the students __________ (already/be) there for nearly 30 minutes, waiting in confusion.
A. finally arrived/ had already been
B. has finally arrived/ has already been
C. finally arrived/ was already
D. had finally arrived/ was already

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Grammar › ViewWhich sentence has an adjective clause?
A. After I cam back home, I watched an interesting film.
B. Twitter, which is used by 1.80 billion people, was founded in 2005.
C. Don’t forget to close the door before you go.
D. I am looking forward to visiting you soon.
Grammar - direct/indirect objects › View
Identify the object of the preposition in the following sentence:
The children were charmed by the magician’s tricks.
A. children
B. tricks
C. charmed
D. magician’s