[ 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:
Conjunctions › View——— significant improvements in health and the introduction of western style medical facilities, China has several emerging public health problems.
A. Owing to
B. Despite
C. Although
D. Instead
E. In connection with
Vocabulary and Grammar › View
If you __________ from a bear, it __________ you.
A. are going to run | chases
B. are not going to run | is going to chase
C. won’t run | won’t chase
D. run | will chase
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
