题目内容：

根据句意和汉语注释，在答卷标有题号的横线上，写出单词的正确形式。

1.Can you tell me what the __________(物品) far away look like?

2.Oil pollution is the most ____________(常见的) cause of death for seabirds.

3.I think you should study up  _________(今晚) instead of playing .

4.Don’t make any noise. The machine is __________(录制) now.