[ Modal Verbs ]
We _________________ protect the environment.
A. Mustn’t
B. Must

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Grammar (either..or.. and neither..nor..) › ViewYou can have ………. a cake ………. a doughnut, but not both!
A. either…or
B. neither…nor
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___ Simsons are ___ crazy family.
A. a/a
B. the/the
C. the/a
D. a/the
He______smart.
A. ‘m not
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We had a good vacation. We enjoyed _____ .
A. us
B. our
C. ours
D. ourself
E. ourselves
