[ 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

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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:
Verb, Object, Preposition › ViewYou should forgive yourself _______ past mistakes.
A. for
B. on
C. from
Verb Types and Tenses › View
What type of verb is ‘asked’ in ‘Lola has asked you at least four times’?
A. Action Verb
B. Linking Verb
C. Helping Verb
D. Transitive Verb
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
