修改病句

①质检人员在第二车间里查出了少数不合格的次品。

②与其在家坐等消息，还是出去寻找机会。

③第29届奥运会要在北京召开，退休的爷爷在家刻苦地对着镜子学英语。

    While  Tom and Mary were on holiday at the seaside, they enjoyed 1seagulls(海鸥). They learned a lot about these2birds.
They will often come close to you on the beach when you are eating something. If you3a piece of bread to them, they will take it away quickly.
    Seagulls swim well, but they do not often dive(潜水)for fish. They are4good at flying with their wings(翅膀)。When a seagulls is flying, It puts its legs5its body. Tom often watched them6close to the ground because he like the way they7the air with their wings and put8their feet before they touched the ground. Mary liked to see them flying over the9smoothly(熟练的) and quietly without their wings moving, 10she said she didn't like the noise they made. 

在我国南海某处打捞起来的古代沉船中，发现了大量青花瓷、彩瓷、珐琅彩等瓷器。请推断，这一沉船事件最可能发生在下列哪一个时期（    ）

下列各句中，没有错别字的一句是（）