[ Modal Verbs of Possibility ]
He looks tired. He ___ have worked all night.
A. must
B. might
C. can’t
D. could not
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Adjectives & PrepositionHabitual and Continuous TensesGrammar ElementaryConditionals III - Mixed 1st, 2nd & 3rd ConditionalsPresent Perfect vs Past Simple TenseModals and Present TensesTenses and Sentence CompletionGrammar and UsageModals - Reported Speech - ConditionalsSports VocabularyOther quiz:
Vocabulary › ViewWe should make full of renewable sources of energy such as wind and solar power in the world.
A. effort
B. use
C. limit
D. need
Modal Verbs › View
Which transition introduces an example of a healthy habit? “Regular exercise is important; ___, walking 30 minutes a day can improve health.”
A. However
B. For instance
C. Therefore
D. Consequently