[ Modal Verbs ]
Which sentence is grammatically correct?
A. We ought to cancels the launch.
B. You ought to know better.
C. She should cleaned up her mess.
D. Should they waited?

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Present Perfect vs Past SimpleGrammar (either..or.. and neither..nor..)Active and Passive voiceGerund, Infinitive & ModalsPrepositionSynonyms and VocabularyAdverb of MannerQuestion Tags in Verb TensesPresent and Future TensesConjunctions and TransitionsOther quiz:
Tenses › View_____ on the computer now?
A. Is Peter working
B. Was Peter working
C. Has Peter working
D. Will Peter be working
Grammar › View
Look! The thief _______ away.
A. run
B. running
C. is running
D. will run
Used to - Would - Tenses › ViewThe teacher …………… us to stand up.
A. spoke
B. said
C. talked
D. asked
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The kitchen is a mess. Can you ________ after dinner?
A. wipe stove off
B. wipe off the stove
C. wipe off it
