单项选择题

A．A druggist’s suggestion.
B．An article.
C．An advertisement.
D．A sales clerk’s comment.
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单项选择题
A．3.B．4.C．6.D．8.
A．3.
B．4.
C．6.
D．8.
填空题
______sentences are used between paragraphs to help tie together the supporting paragraphs in an
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