[ To Infinitive/Bare Infinitive/Gerunds ]
I’m sure that he knows ————– this new machine.
A. to use
B. using
C. how using
D. how to use

Random Topics:
Present Perfect Simple & ContinuousSimple Past ContinuosCountable & Noncountable NounsPresent Perfect and Past TensesNarrative, Past TensesConditional and Mix Conditional SentenceAdverb and Noun ClausesGrammar: Defining Relative ClausesGrammar, Conditional Sentences, VocabularyComparative - SuperlativeOther quiz:
Perfect Tenses › ViewBill ________ (train) new recruits for many years when he finally received recognition for his efforts.
A. had been training
B. has been training
C. had trained
D. has trained
Grammar › View
Which of the following is a correct revision of the sentence fragment “Ate something bad.”?
A. Ate something bad, Kira.
B. Kira ate something bad.
C. Ate something bad, she.
D. Kira something bad ate.
Sentence Structure and Conjunctions › ViewWhat is the subordinating conjunction?
We had fun while we were at the park.
A. while
B. fun
C. at
D. were
Grammar › View
Alexander _____ taking his driver’s test next week.
A. is
B. are
C. will
D. was
