[ Present Tenses ]
A group of scientists are travelling around Africa. How many countries _____ so far, I wonder?
A. have they been visiting
B. do they visit
C. they have visited
D. have they visited

Random Topics:
Will and Will notVerb Tenses and Past ParticiplesPersonal PronounPast PassiveHave as verb and auxiliaryPast Simple VerbsProgressive TenseVerb PatternsPassive Voice in Past Simple TenseNoun, Verb, AdjectiveOther quiz:
Grammar › View___________ we live 20 storeys up, our view of the city is blocked by other buildings.
A. Although
B. Since
C. Because
D. Indeed
Modal Auxiliaries › View
Tomorrow, I ________ compete in my very first race.
A. should
B. would
C. will
Phrasal Verb › Viewrefuse an offer
A. Turn away
B. Turn off
C. Turn down
D. Turn in
Would/would like - affirmative/negative › View
He _ go to the beach if it were hot outside.
A. would
B. wouldn’t
