The letter _____from her pen pal in Canada .They often write to each other.A.shouldn't be B.must be C.needn't

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The letter _____from her pen pal in Canada .They often write to each other.A.shouldn't be B.must be C.needn't
The letter _____from her pen pal in Canada .They often write to each other.
A.shouldn't be B.must be C.needn't

The letter _____from her pen pal in Canada .They often write to each other.A.shouldn't be B.must be C.needn't
b

must be

B