[ 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
Select your answer:

Random Topics:
Pronouns of QuantityVocabulary and PrepositionsPresent Continuous, Present Perfect and Used toSimple Present and Past TenseSimple Past and Past Progressive TensesCoordinating ConjunctionPoetryAdverbs, Prefixes, and SuffixesGrammar - QuantiflierPresent simple & ContinuousOther quiz:
Grammar › ViewMary is absent today. She ( ) to Hokkaido.
A. comes
B. has been
C. has gone
D. has arrived
Mixed General Quiz › View
Go get a ___ of bananas in the produce section at the front of the store.
a. head
b. dozen
c. bunch
d. pint
