[ Tenses ]
Which one is the correct answer?
A. Did your friend explore the country in his twenties?
B. Had your friend been exploring the country in his twenties?
C. Had he exploring the country in his twenties?
D. Did your friend explored the country in his twenties?

Random Topics:
Can vs be able toModals and Comparative SuperlativeVerbs and AdverbsWord FormationGerunds and TensesComparative - SuperlativeSimple Verb TensesVerbs of movementAuxiliary VerbsLinking Verbs & Helping VerbsOther quiz:
Preposition › ViewHe is anxious ___ his exam.
A. on
B. at
C. for
D. about
Ed and Ing Endings › View
These instructions are extremely …… Can you help me?
A. confused
B. confusing
Many accidents … by dangerous driving.
A. is caused
B. is being caused
C. are caused
D. caused
Grammar › View
The ____ were given an order by their superior to maintain peace and order.
A. Policeman
B. Policemen
C. Policemans
D. Policemens
