93
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93. Animals ........ be killed for medical research. It’s unethical, in my opinión.
A) must not
B) might not
C) couldn’t
D) doesn’t have to
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Modal & Semi Modal Verbs
93. Animals ........ be killed for medical research. It’s unethical, in my opinión.
A) must not
B) might not
C) couldn’t
D) doesn’t have to