根据句意，在答题卡标有题号的横线上，写出括号内所给单词的适当形式。

1. Sometimes it requires courage to tell the __________(true).

2. This machine is ____________(special) designed for blind people.

3. Follow me, guys! Close your eyes, open your arms and ___________(breath) deeply.

4. What a terrible painting! This is probably the ________(ugly) painting I’ve ever seen.

为减少大气折光影响，水平位移观测点应高于坝面2米以上（指砼坝）。