1£®To our great astonishment, a girl became the only survivor(survive) of the plane crash, and she was only slightly wounded(wound)£®

2£®It was the young man who sacrificed his own life to_rescue(rescue) the drowning (drown) boy from the river before it was too late.Everyone present was deeply(deep) moved by his bravery.

3£®On 1st September in 1939, Germany declared war on Poland and the Second World War broke out.Many countries were involved in the war.After lasting(last) six years, it ended in 1945.

4£®Encouraged(encourage) by the teacher£¬he was occupied (occupy) with his study and was eventually admitted to a key university.In his view, all his efforts were worth while.