6. 没有错(for granted可以这么用）但是太口语化.
7. in priority schedule不顺 － They have relegated these problems according to the priority OF the schedule （the一定不能乱省）
8. Address一个letter很奇怪的用法,by也不妥,可以考虑: I'll address the items in this letter to her through Donna's lawyer.
9. 如果这个语序一定要有逗号在news 和 I didn't之间.
10. 用using而不是by是会好很多.
Saler(要么这里复数后面动词不能有s) signal using signal flag in daytime and signal lamp at nnight.