[ Yes-No Question ]
The passengers have been waiting for thirty minutes.
- Have been the passengers waiting for thirty minutes?
- Have the passengers been waiting for thirty minutes?

Random Topics:
Articles A and AnModal Verbs for SpeculationQuantifiers & Modal VerbsUsed to - Would - TensesInfinitive or GerundVerb to Be Tenses & Object PronounGrammar and ReadingSubordination ConjunctionsSimple Present Negative and QuestionPresent Simple QuestionsOther quiz:
General › ViewWhich organ has four chambers?
A. Stomach
B. Liver
C. The heart
D. Lungs
Prepositions › View
She lives …… a house.
A. In
B. On
C. At
The Thompson arrived ______ Thailand when went on their holiday.
A. in
B. at
C. about
D. to
Grammar › View
This isn’t my iphone. I’m sure it’s ___________.
A. Yours
B. Your
C. You’re
D. None of the above.