[ Continuous Tense ]
We are trying to catch the ball that …. down the hill.
A. is rolling
B. are rolling
C. roll
D. rolled

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The Structural Types of SentencesModal Verbs of Deduction and SpeculationPresent Simple Positive and NegativeGrammar of Conjunctions and PrepotitionsInfinitives or GerundsGrammar Past and Future TenseComparatives or SuperlativesSimple, Complex, Compound SentenceSimple PastRelative Clauses and UsageOther quiz:
Grammar › ViewDo we need _____ paper?
A. any
B. some
C. a
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My mother _______ at weekends because the traffic is very heavy.
A. isn’t driving
B. doesn’t drive
C. don’t drive