[ Modal Auxiliaries and Similar Expressions ]
Which sentence means ‘I was not familiar with using Linux before, but now I am’?
A. I used to using Linux.
B. I am used to using Linux.
C. I used to use Linux.
D. I must use Linux.

Random Topics:
Modals of ObligationGrammar - Be going toSo - Too - Either - NeitherNoun, Verb, AdjectivePast Perfect Tense and Past TenseSimple Present and Present Continuous TenseNounsTransitionsIN, ON & ATConjunctive AdverbsOther quiz:
Vocabulary › ViewThe football team was no match for its _______________________ opponent.
A. diffident
B. indomitable
C. dearth
D. pungent
Grammar › View
Choose the complete sentence
A. A green
B. I see a green plant.
C. green plant