Complete the sentences with the correct form of the modals ...

★ Expressing Obligation and Modals

Complete the sentences with the correct form of the modals and verbs in parentheses:

Companies ___________ (need / communicate) with customers and e-mail them regularly.

A. needs to communicate

B. need to communicate

C. need communicate

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The example of expressing obligation is…

A. They have to wear uniform at school

B. You should wear uniform at school

C. You aren’t allowed to wear uniform at school

D. We must not wear uniform at school