[ Tenses ]
Developers ______ new technologies for improving online privacy in recent years.
A. will invent
B. had invented
C. have invented
D. invent

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Simple Past ContinuosGrammar Double Object VerbsPossessive Adjectives VS Possessive PronounsInfinitives or GerundsWill and Going toPast ContinuousVerb Tenses and AgreementModal Auxiliary VerbsActive and Passive Gerunds and InfinitivesClauses and ConjunctionsOther quiz:
Mixed General Quiz › ViewLong stem flowers look best in a ___.
a. vase
b. base
Grammar › View
James …….. to rent a house by the sea, but it was too expensive.
A. tried
B. tryed
C. tryied
D. tries
Prepositions of Place › ViewThe radome is ______the nose of the aircraft.
A. in
B. on
C. at
Grammar › View
There _____ fewer people at the shopping malls now.
A. is
B. are
C. was
D. were
