[ 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.

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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:
Grammar › ViewMy family might ___ to Dubai next weekend.
A. travel
B. traveling
C. travels
D. to travel
Grammar › View
I don’t know how to ski, so I didn’t go skiing with Simon last week.
A. If I knew how to ski, I would go skiing with Simon last week.
B. If I would know how to ski, I would have gone skiing with Simon last week.
C. If I had known how to ski, I gone skiing with Simon last week.
D. If I knew how to ski, I would have gone skiing with Simon last week.
Grammar › ViewLeo ………………. 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