[ Tenses and Word Formation ]
Sefu Asamoah is an innovative architect who is _______ the traditional approach to constructing space- efficient apartment buildings.
A. challenge
B. challenging
C. challenged
D. challenges
Select your answer:

Random Topics:
Verb BEQuestion WordsGrammar: Used to, Would, Be used to, Get used toPhrasal Verbs and GrammarConjunction and PunctuationTransitive and Intransitive VerbFuture Continuous TenseMay, MightPreposition and ConjunctionPresent PerfectOther quiz:
Gerund & To Infinitive › ViewThe average spoken sentence in conversational English takes 2.5 seconds _____.
A. completes
B. to complete
C. completing
D. complete
Vocabulary › View
What does “genuine” mean?
A. Authentic or sincere
B. To keep in good condition
C. The position or bearing of the body
D. Communication to a group of people in a public setting
