ルール
Two complete sentences cannot be joined with only a comma (comma splice) or with nothing (run-on). Use a period, a semicolon, or a comma plus a conjunction.
2つの完全な文をコンマだけ（コンマスプライス）や何も使わずに（ランオン）つなぐことはできない。ピリオド、セミコロン、またはコンマ＋接続詞を使う。
✔ 正しい文： The data were incomplete; the team repeated the survey.
✘ 誤った文： The data were incomplete, the team repeated the survey.
→ 直し方： Replace the comma with a semicolon or a period.
コツ: Check both sides of a comma: if each side could stand alone as a sentence, a comma alone is wrong.
練習：10問
Which choice completes the text so that it conforms to the conventions of Standard English?
AUSLEXが作成したオリジナルの解説と問題で、College Boardの公式資料ではありません。SATはCollege Boardの商標です。