[ Grammar ]
How long have they ________ there?
A. waited
B. been waited
C. been waiting

Random Topics:
Grammar and PrepositionsPresent & Past TensesModals VerbsPast Simple (Questions)Modals of Speculation and DeductionModals and AdviceWord Form & Verb TenseGrammar - ConnectorsGrammar : can, could and be able toArticles - rulesOther quiz:
Grammar › ViewI …… to Canada next week.
A. Go
B. Will go
C. Going
Grammar › View
I can’t imagine ________ without internet.
A. sleeping
B. living
C. breathing
D. eating
Vocabulary › ViewWho is the _________ of your group ?
A. head
B. responsible
C. beside
D. despite
Passive Voice - Present Continuous › View
Someone is cleaning the room.
What is the passive?
A. The room is cleaned.
B. The room is being cleaned.
C. Someone is cleaned.
