适当形式填空 Billy --（move）to America in 2012.It's time for class.

1 Billy （moved）to America in 2012.
分析 2012年已过去,用过去时,MOVE 的过去式是moved
2 It's time for class.Please (stop)talking.
分析：祈使句是动词原形开头.
3 That day my teacher (wore ) a thick coat.
分析 wear的过去式是： wore
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