[ Grammar ]
Only when ______ may vehicles cross the train tracks.
A. is the green light on
B. did the green light be on
C. on is the green light
D. the green light is on
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Adjectives with PrepositionComparison Degree & GerundsSpeculation with Modal VerbsGerunds, Infinitives and ParticiplesDependent PrepositionsModifiersClauses and ConjunctionUnscramble SentenceDo / Have / Can - Basic QuestionsPresent Progressive or Present SimpleOther quiz:
Grammar › ViewIt’s good practice _____ you
A. for
B. at
C. of
D. in
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My father is so tired since he … our garden all day for planting vegetables.
- has prepared
- has been preparing
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Take care of our environment, _______ that the future generations may also enjoy it.
A. So
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We______ have been crazy.
A. Must
B. Will
C. Should
D. Could