Topics: 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:
Adverbial Clauses of Manner and ResultZero & First ConditionalIndependent/Dependent Clauses & Relative ClausesTimePresent Continous TenseSimple Present vs Present ProgresiveVerbs & AdverbsDefinite and Indefinite ArticlePronounciation and GrammarSubordinating and Coordinating ConjunctionsOther quiz:
Modal Verbs › ViewYou have been reading for four hours. This book ………. be very interesting.
A. might
B. should
C. must
D. can
Phrasal Verb › View
He ________ that the museum closes at 5 p.m., so we’d better hurry.
A. pointed out
B. gave up
C. turned over
D. rubbed out
