[ Passive Voice ]
The problem_________________ (solve) quickly once the manager arrived.
A. The problem is solved quickly once the manager arrived.
B. The problem was solved quickly once the manager arrived.
C. The problem has been solved quickly once the manager arrived.

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Modals and Active and Passive VoicePresent Simple PassiveOrdering AdjectivesPresent Perfect vs Past Simple TensePresent Simple, Present Continuous or Present PerfectArticles and DeterminersVerb + Infinitive or GerundSentence TypesPresent Perfect or Past SimpleGrammar Present Perfect (ever never)Other quiz:
Subject – Predicate › View The brown cows grazed in the meadow.
A. Complete subject
B. Complete predicate
C. Simple subject
D. Simple predicate
Prepositions › View
We decided to take a taxi ___ the rush hour traffic.
A. through
B. to avoid
C. by
D. on
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A. Is
B. Isn’t
C. Are
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Homonyms › View
A row boat needs more than one ___.
a. oar
b. ore