[ 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

Random Topics:
Adverbs by TypeFirst ConditionalsDefinite and Zero ArticleSimple TensesAdjectivePerfect ModalsGrammar - Present and Past PassivePronouns and AdverbsComparison and ModalsAdjective & AdverbsOther quiz:
Phrasal Verb › Viewstart a journey
A. Set on
B. Set to
C. set off/out
D. set up
Vocabulary › View
What does “avid” mean?
A. Uninterested
B. Interest/Enthusiasm
C. Indifferent
D. Hesitant
Grammar › ViewChoose the correct option. They ________ to the concert last night.
A. didn’t go
B. don’t go
C. doesn’t go
Time Clauses of Future › View
First, I will talk to the director. Then, I will take a decision.
A. I won’t take a decision until I talk to the director.
B. I won’t take a decision untill I talk to the director.
C. I won’t take a decision until I will talk to the director.
