[ Inversion + Passive Voice ]
so popular…………..that it now carries nealy two million passengers each day.
A. has the system become
B. the system has become
C. have the system become
D. the system has became

Random Topics:
So or SuchPrepositionsModals VerbsVerb Moods and Vague PronounsGrammar, adverbs of frequency placementVocabularyGrammar Like & Linking VerbSpeech TensesTime and CalendarIntermediateOther quiz:
Too or Enough › ViewThe room was …. so I turned the heating off
A. too hot
B. hot enough
C. enough hot
D. hot too
Modal Verbs › View
I’m sorry to bother you, but _____ I ask you a quick question?
A. Can
B. Must
C. Could
D. Will
Conjunctions › ViewLet’s review our answer _____ we finish the exam.
A. after
B. before
C. if
D. until
Grammar › View
The “Mona Liza” was______by Leonardo da Vinci.
A. painted
B. designed
C. sculpted
