完成句子 根据所给的汉语内容，用英语完成下列句子。
(1) 丹尼一年两次到日本参加重要会议。
Danny goes to Japan for important meetings ______ _______ _________.
(2) 当他进来时，看上去是多么兴奋啊！
______ _______ ________ __________ when he came in!
(3)店长的英语太差了，以致无法明白外国人的意思。
The shopkeeper’s English was ______ ________ _____ he couldn’t understand the foreigners.
(4) 这项新实验已被（1）班的学生成功地在实验室完成了。
A new experiment _____ _______ ______ _______ by Class 1 students in the lab.
(5)每天收集信件是他的工作。
________ _________ every day ________ his work.
1.twice a year 2.How excited he looked
3.so poor that
4.has/had been done/finished successfully
5.Collecting letters; is
___________