[ Grammar ]
One combination is not possible: source of
A. people
B. information
C. energy
D. opportunities

Random Topics:
Articles & QuantifiersTenses, Determiners & Subject Verb AgreementPast Perfect and Past Perfect ContinuousInversion + Passive VoicePersuasive TextPassive SentenceSimple Past ContinuosPrepositions and AdverbsConjunctions and PrepositionAuxiliary WordsOther quiz:
Passive Voice › ViewMy father always listens the radio after working.
The radio …… by my father after working.
A. was always listened
B. has been listened
C. is always listened
D. is being listened
E. was being listened
Grammar › View
Sarah didn’t answer the phone. She ______________been sleeping.
A. should have
B. might have
C. hadn’t
D. mustn’t have
A: I can’t find my keys!
B:I _______________ (help) you look for them.
A. will help
B. am going to help
Modal Verbs › View
It _________ rain, but the possibilities are low, there are only a few clouds in the sky.
A. has to
B. might
C. could
D. must