[ 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:
Grammar › ViewMy brother rides three different ______ to get to work.
A. bus
B. buss
C. buses
Indirect Question › View
“Shall I quit my job?” asked the employee.
- The employee asked whether she shall quit her job.
- The employee asked whether she should quit her job.
Preference & Future Tense › View
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