[ Grammar ]
Why ____ they miss the meeting yesterday?
A. do
B. does
C. did
D. are

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Articles & QuantifiersComparatives, Superlatives, and ModalsPresent Simple Tense PassiveModals and Adjectives (ed-ing)Modals TensesPassive ModalsDirect and Indirect SpeechInfinitives or GerundsSingular and Plural NounsComparative and SuperlativesOther quiz:
Tenses › ViewWhile they (study), the lights went out.
A. While they were studied, the lights went out.
B. While they were studying, the lights went out.
Grammar › View
What is the meaning of compound?
A. A close room
B. An open area with fence
C. A flower