[ Verb Ability ]
Which sentence correctly uses ‘be able to’ in the present perfect tense?
A. I am able to solve the puzzle.
B. I was able to solve the puzzle.
C. I will be able to solve the puzzle.
D. I have been able to solve the puzzle.

Random Topics:
Future SimpleThere is, There are, Some, AnyPreposition and AdjectiveRelative & Interrogative PronounsInfinitives and GerundsSimple Past Tense & Future TenseMix-TensesVerb Forms and PrepositionsModal Verbs and Contrastive ConjunctionsAdverbs, Modals, Preposition of timeOther quiz:
Grammar › ViewDo you remember the incident that __________ at our first meeting?
A. took place
B. has taken place
C. had taken place
D. had place
Articles › View
In England you must go to —- school until you’re 16
A. the
B. a
C. an
D. zero
Relative Pronouns and Adverbs › ViewThe school bus _______ I ride home is number 45.
A. who
B. whom
C. which
D. that
Grammar › View
As a child, he hated _____________ books, but now he finds it enjoyable
A. to read
B. to reading
C. read
D. to be read
