[ Passive Modals ]
People —- (not explain) some UFO sightings easily. No one is able to explain them easily.
A. cannot be explained
B. cannot explain
C. cannot been explained
D. cannot explained

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Grammar › ViewWhere is the Eiffel Tower located?
A. Moscow, Russia
B. Johannesburg, South Africa
C. Paris, France
D. Melbourne, Australia
Grammar › View
I often think _____ the day we met.
A. off
B. on
C. about
D. for
Grammar › ViewThe student ____ homework is due tomorrow needs to complete it tonight.
A. whose
B. which
C. who
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Choose the correct spelling below.
A. discover
B. discaver
C. descover
