1 . 请和你的同桌讨论扔垃圾时，需要注意什么。
Discuss with your deskmate what we should______when throwing rubbish.

2 . 那个学生无法解释为什么迟到。
The student couldn’t____his being late.

5 . 最终，在20世纪，爱尔兰南部脱离了英国，形成了我们如今所看到的全名：大不列颠及北爱尔兰联合王国。
Finally, in the 20th century, the southern part of Ireland ________ ________from the UK, which ________ ________the full name we have today: the United Kingdom of Great Britain and Northern Ireland.

6 . In order to _______________ (集中注意力于) his studies, he has to   _______________ (放弃) two extra clubs, with only his favorite one left. （根据汉语提示完成句子）

7 . He never really ____________ ____________as an athlete and was a complete failure.
作为一个运动员他从未成功过，完全是个失败者。