[ Modals ]
A: The Great Wall of China took around 2500 years to build. B: Thousands of people ______ in the construction. A: Yes indeed millions.
A. must have worked
B. might have worked
C. mustn’t have worked
D. cant have worked

Random Topics:
Past Simple Negative & QuestionsGrammar - used toVocabulary, Adjective & PrepositionPresent Continuous for FutureSimple Present Continuous TenseRelative - ConditionalFormal & Informal WordsModals AuxiliaryZero and First ConditionalsSentence Structure and Grammar RulesOther quiz:
Present Tenses and Connectors › ViewShe ___ study English on Saturday.
A. doesn’t
B. don’t
C. isn’t
Modal, Causative Verb & Elliptical Structure › View
My aunt … me to drive her new car everyday.
A. Get
B. Gets
C. Made
D. Makes
Grammar and Vocabulary › View_____ James drive a car?
A. Do
B. Are
C. Can
Grammar › View
She went to see a doctor about the pain in the lumbar area of her __________.
A. calf
B. physiotherapist
C. push-ups
D. spine
