【題目】Sam runs much than his brother.

A. fast B. faster C. fastest D. the fastest

【答案】B

【解析】

試題分析：句意：薩姆姆比他弟弟跑得快得多。fast快； faster更快；fastest最快；the fastest最快。根據(jù)than可知該用比較級(jí)形式，所以選B。

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