[ Present Continuous Tense ]
Caroline …………………………….in the river.
A. Is swimming
B. Are swimming
C. Be swimming
D. Am swimming

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Time Clauses of FutureSimple, Compound, Complex SentencesLanguage Features of an Opinion ArticleVocabulary and ModalsClause Markers TOEFL GrammarSecond ConditionalContinuous TensesBare Infinitive and To InfinitiveConditional and SubjunctiveGrammar - Reflexive PronounsOther quiz:
Grammar › View“What _____________ ?”
“I don’t know. Look it up.”
_
A. means this word
B. is meaning this word
C. is meaning this word
D. does this word mean
Future Tenses › View
By the time you finish this exercise, you _____ all future tenses .
A. will have mastered
B. will have been mastering
C. will master
D. will be mastering
Grammar › View___ my mother dies not like seafood, she cooks prawns and crabs for us.
A. Furthermore
B. In addition
C. Although
D. Since
Present Tenses › View
Do they _______ (to visit) their friends often?
A. visit
B. visits
C. are visiting
D. is visiting