I’m sure he did this because I saw him standing there.
A. He must have done this because I saw him standing there.
B. He can have done this because I saw him standing there.
C. He need have done this because I saw him standing there.
D. He may have done this because I saw him standing there.

Random Topics:
Modal Verbs of Deduction and SpeculationFrequency-ing form and the to-infinitiveGerunds as objects of prepositionGrammar - ConnectorsStative Verbs and TensesPresent Perfect or Past SimpleNoun and Modal VerbsGrammar MistakesGerund NounOther quiz:
Tenses › ViewRewrite the sentence in past perfect tense: She has finished her homework.
A. She was finishing her homework
B. She finished her homework
C. She had finished her homework.
D. She will finish her homework
Grammar › View
Choose the correct form: They __________ (to visit) their grandparents every summer.
A. visit
B. visiting
C. visited
D. will visit
Grammar › ViewI always go ______ quiet when I have to study.
A. nowhere
B. somewhere
C. anywhere
Grammar › View
She wished that she had been rich when he was seeing a beautiful girl. what is the fact?
A. she didn’t rich
B. she is not rich
C. she was not rich
D. she was rich
