[ a, an, the, Zero Article ]
Einstein is known for his theory of ___ relativity.
a. a
b. an
c. the
d. X [Nothing]

Random Topics:
Have as verb and auxiliaryNounsProgressive TenseReported SpeechApologizingGrammar, adverbs of frequency placementAuxiliary and Modal VerbsPast and Present TensesTenses of VerbsPreposition of DirectionOther quiz:
Present Simple and Past Continuous › ViewThomas often ……………… his temper when he doesn’t get a good score for his test.
A. lose
B. loses
C. is losing
D. lost
Grammar › View
The new location of the Bentler Company is easily ……. by car or bus.
A. access
B. accessibility
C. accessible
D. accessed
Grammar › ViewThey _______ new apartments right now
A. will build
B. are building
C. are build
D. built
Action vs Linking Verbs/ Verb Phrases › View
Identify the verb or verb phrase:This was a great day!
A. This was
B. was a
C. great day
D. was
