[ 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 › ViewWhich sentence is correct?
A. Everyone should turn in their homework.
B. Everyone should turn in his/her homework.
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A:Look! Your cat is dancing! ______ it do that before? B:Yes, it ______ did when(當……時)it was happy.
A. Does; usually
B. Did; seldom
C. Did; danced
D. Did; always
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