[ Grammar ]
The teacher solved the problems.
A. The problems was solved by the teacher.
B. The problems are solved by the teacher.
C. The problems were solved by the teacher.

Random Topics:
Progressive TenseNoun and PronounGerundsInterrogative Pronouns & AdverbsAdverbs, Infinitives, Definite ArticleVerbs: Will & Going toVerb AgreementRelative Clauses beginning with PrepositionsPresent Perfect and Present Perfect ContinuousClause Markers TOEFL GrammarOther quiz:
Comparative Adjectives › ViewWhich is comparative form? “I’m strong, but my brother is______.”
A. strongest
B. as strong
C. stronger
Used To, Be Used To, Get Used To › View
I ____________ smoke when I was a child
A. didn’t use to
B. didn’t used to
Leo ………………. exercises in his free time.
A. walks
B. plays
C. does
D. makes
Modals of Obligation & Prohibition › View
She _____ wear a uniform to school.
A. has to
B. can