[ a, an, the, Zero Article ]
Roentgen was ___ German physicist who discovered x-rays, revolutionizing medical diagnosis.
a. a
b. an
c. the
d. X [Nothing]

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Grammar of Future Planstake, make, doGrammar and VocabulariesZero Conditional SentencePast Tense vs Present TenseConditionals and Modal VerbsPreposition of PlaceAdjectives and DegreesToeic VerbSimple Past TensesOther quiz:
Grammar › ViewI had _____ soup and a sandwich for lunch.
A. A few
B. A lot of
C. Many
D. Much
E. Some
Grammar › View
Most people are born with the natural ability to ……. stories, but only a rare few have the determination to become professional authors,
A. tell
B. say
C. speak
D. announce
Vocabulary › ViewWhat does “garrulous” mean?
A. Reserved
B. Chatty
C. Reticent
D. Talkative
Tenses › View
I think that they _____ (arrive) tomorrow morning.
A. will arrive
B. arrive
