有兩題英文題目想請教

1) Massachusetts was first employee (A) in the late sixteenth and early (B) seventh centrist (C), and the first settlement (D) at Plummet in 1620. No error (E)

2) The dramatic (A) first-floor gallery of the (B) new museum is devoted (C) to the resident artist's series of five oversize mural (D). No error (E)
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請問各位大哥，上面兩句子中哪些地方有問題和為什麼。