[ Vocabulary ]
It was a huge _____________ to run the marathon, but he did it!
A. mission
B. system
C. challenge
D. form

Random Topics:
Gerund or InfinitivesPresent Simple or Present ContinuousPhrasal Verb Put & GoNoun ClausesModal Verb in Passive VoiceGrammar and VocabulariesPast and Future TensesConditional Sentence Type 3Linking VerbsPossessive Adjectives VS Possessive PronounsOther quiz:
Grammar › ViewWhich sentence is grammatically correct?
A. Tom Cruise an actor stars in Top Gun.
B. Tom Cruise, an actor stars in Top Gun
C. Tom Cruise, an actor, stars in Top Gun.
Adverbs › View
Toxic gasses are being released into the air ____________ petrol cars.
A. because
B. because of
Grammar › ViewI’d like _________ Paris one day.
A. visiting
B. to visit
C. visiting
D. going to visit
Vocabulary › View
I need to __________ my friend to ask her about the homework.
A. visit
B. call
C. throw
D. clean