[ Grammar & Vocabulary ]
The company _______ stop working on the building project last year because of financial problems.
A. had to
B. must
C. has to

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Verb PhraseVerb, Object, PrepositionSimple Past Tense and Present Continuous TensePhrases & ClausesPresent Perfect Continuous TenseSpeculation with Modal VerbsWho vs WhomModal Verbs of Deduction and SpeculationSynonymsModals: Possibility, Necessity, ExpectationOther quiz:
Grammar › ViewIn modern times people have to keep up _____ new technologies.
A. with
B. of
C. at
D. in
Grammar › View
How long have they ________ there?
A. waited
B. been waited
C. been waiting
Past Tenses › ViewThey ___________ (watch) TV when I called them last night.
A. watched
B. were watching
C. watches
D. was watching
Present Perfect Tense › View
……. you written a letter?
A. has
B. have
C. do
