[ 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:
Passive Voice › ViewMary helped the boy. The passive is …
A. The boy is helped by Mary
B. The boy was helped by Mary
C. The boy is being helped by Mary
D. The boy helps by Mary
Grammar › View
Choose the correct homophone to complete each sentence:
I have long _____________.
___
A. hair
B. hare
C. here
D. air
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