[ Grammar ]
Who taught you ______ this complex software so quickly? It’s quite impressive.
A. using
B. use
C. to use
D. used

Random Topics:
Present Simple x Present ContinuousModal Verb, Passive Voice-ing / InfinitiveAdjectives and DegreesPresent simple, Present continuous, Singular, PluralPresent simple & ContinuousAsking and Giving Suggestion-ed and -ing AdjectivesConnectivesPresent Perfect and Present Perfect ContinuousOther quiz:
Modal Verbs and Permission › ViewHow should you correct this refusal: ‘You can’t borrow my car, yes you can.’
A. You can’t borrow my car.
B. You may borrow my car.
C. You can’t borrow my car, but maybe you can.
D. Yes, you can’t borrow my car.
Progressive Tense › View
I will be …… at home
A. Staying
B. Stayed
C. Being stayed
D. Stay
Grammar › ViewChoose whether a comma or a semicolon should be used in this sentence:
“When we get to the baseball _____ will you buy me some peanuts?”
A. game,
B. game;
Toeic Verb › View
After Ms. Williams —— Levine Advertising, she made some innovative suggestions to reduce expenditures.
A. join
B. joined
C. is joining
D. has been joining
