Topics: Expressing Obligation and Modals
Choose the correct option to complete the sentences:
Companies ___________ look after existing customers carefully because it is expensive to get new customers.
A. need to
B. don’t have to
Select your answer:

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Present Simple & Present Continuous › ViewTeachers and students _________________ to use different digital resources now.
A. learn
B. is learning
C. learns
D. are learning
Subordinating Conjunctions › View
What is the primary function of “Because” in a sentence?
A. To introduce a contrast
B. To explain a reason
C. To indicate a condition
D. To connect two independent clauses
