[ Present Simple and Continuous Tense ]
They __________ (travel/travels) around the world during their vacation.
A. travel
B. travels
C. traveling
D. is traveling

Random Topics:
Verb PhrasesComparative AdjectivesSimple Present and Past TensesCan vs CouldFuture TenseModals and VocabularyFuture Continuous, Future Perfect and Future Perfect Continuousused to, be used to, get used toVerb Present Simple TenseNouns FormationOther quiz:
Noun Clauses › ViewIs it true ________ people are saying about you?
A. when
B. what
C. if
D. that
Grammar - Present Perfect Tense › View
A: Has Jack driven a car before?
B: No, this is the first time he _____________ (drive) a car.
A. drives
B. has driven
C. have driven
D. drove