[ Expressing Obligation and Modals ]
Choose the correct option to complete the sentences:
Companies ___________ invest in technology to communicate with customers online.
A. have to
B. mustn’t

Random Topics:
Present Perfect and Present Perfect ContinuousLet & Be allowed toDemonstrative Pronouns and Verb TensesComparatives and Past Perfect TenseGive, do and makePossessive Adjectives & Possessive PronounsPrepositions and AdverbsPreposition of PlaceUnreal ConditionalsPast Continuous vs Past SimpleOther quiz:
Coordinating Conjunctions › ViewAndy plays the violin well, _____ the trumpet is his favorite instrument.
A. so
B. but
C. yet
D. for
Vocabulary › View
What is an ‘elevator’?
A. It moves people up and down floors
B. The day before tomorrow
C. The highest part
D. He gave her a ______ gift.
Tenses › ViewI ______ to the gym every day last month.
A. have been going
B. went
C. was going
D. had gone
Grammar › View
Lillian teaches English, and ____ her cousin, Amy.
A. do too
B. also does
C. so do
D. so does
