[ Grammar ]
The role of the architect, though changing, _____ been central to the successful and sometimes less than successful design and implementation of pleasingly built environments in which people live.
A. has
B. have
Select your answer:

Random Topics:
Was and WereModal and Relative PhrasesVocab CheckingPast Simple Negative & QuestionsInfinitive or GerundComparison Degree & GerundsModal Verbs - ObligationGrammar and PunctuationTenses and ConclusionsGerund and InfinitiveOther quiz:
Modal Verbs › ViewWe’re full now. We ….. not eat any more cakes.
A. can
B. may
Tenses › View
Our father ____ coffee every morning.
A. isn’t usually drink
B. doesn’t usually drinks
C. won’t usually drink
D. doesn’t usually drink
