[ Expressing Obligation and Modals ]
Complete the sentences with the correct form of the modals and verbs in parentheses:
We ___________ (must / maintain) excellence in our customer service or people will complain.
A. mustn’t maintain
B. must maintain
C. must maintains
Select your answer:
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Other quiz:
Grammar › ViewI am sure David ________________ taken you books by mistake.
A. shouldn’t have
B. must have
C. couldn’t have
D. might have
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She loves to swim, __________ she doesn’t like deep water.
A. because
B. and
C. but
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