阅读下面的文字，完成下列各题。
                                                                                                      梅 花
                                                                                                                             陈亮
                                                                     疏枝横玉瘦，小萼点珠光。一朵忽先变，百花皆后香。
                                                                     欲传春信息，不怕雪埋藏。玉笛休三弄①，东君②正主张。
                                                    注释：①三弄：指笛曲名“梅花三弄”。古有笛曲谢梅花之说。②东君：司春之神。

按要求写出下列单词的相应形式。

①radio(复数)____ ②dictionary(复数)____

③tomato(复数)____ ④real(副词)____

⑤strawberry(复数)____

In the past, ice used to ______ used to ______ the air in a room.

直线x+y+1=0的倾斜角是（   ）

图象经过（1，2）的正比例函数的表达式为____．