[ Tenses ]
When ______ Barack Obama ______ the president of the USA ? ( to become )
A. did ____ became
B. was _____ becoming
C. became
D. did _____ become

Random Topics:
Present SimplePassive Voice, Question Tag, PrepositionsAdverb of MannerMixed TensesPrepositions and Prepositional PhrasesTenses and ComparisonsPRESENT SIMPLE vs PRESENT CONTINUOUS + QUANTGrammar and IdiomsParallel Structure or Combining SentencesDescriptionsOther quiz:
Tenses › ViewWe (find) a solution to the problem so far. Don’t worry.
A. will find
B. have found
C. are finding
D. had found
Prepositions and Prepositional Phrases › View
Which of the following is a preposition?
A. Run
B. Under
C. Quickly
D. Beautiful
Personal Pronouns › ViewDid you see Mikko as ___ looked for the three missing puppies?
A. she
B. he
C. it
Grammar › View
She____________ to the dentist twice a year.
A. go
B. went
C. goes
D. gone
