Formulate a sentence using ‘may have’ to express uncertainty about a past event.
A. She may have left the lights on last week.
B. He may have eaten lunch at noon today.
C. They may have gone to the concert next month.
D. She may have forgotten her keys yesterday.

Random Topics:
Causative VerbsRelative Clauses & Real ConditionalsGrammar and StructureDirect and Indirect SpeechArticles and DeterminersTypes of PhrasesSimple Past Tense and Past Perfect TenseDependent PrepositionEnglish ArticleVerb and PrepositionOther quiz:
Vocabullary Test › ViewSound symbolism means that we often _____ the meaning of a word from its sound.
A. guess
B. judge
C. imagine
D. expect
Past Tenses › View
I __________ (work) for the company for five years before I got promoted.
A. had workd
B. had been working
C. was working
D. worked
Adverbs › ViewWhich adverb correctly completes the sentence?
Jim can’t draw lines very _____.
A. straight
B. straighter
C. straightest
Punctuations › View
“Are you busy today? ” is what type of question?
A. Tag question
B. Wh-question
C. Yes-No question
D. Interrogative sentence
