单词拼写。

 根据下列句子及所给汉语注释,写出空缺处各单词的正确形式。(每空只写一词)

1.The temperature of greenhouses is _____ (控制)with computers.

2. I thought I knew the way, but _____ (不知怎么地) I got lost. 

3. Hard working _____ (条件)are a test to one's character.

4.The doctor is busy _____ (检查)the students' eyes.

5. Experts are _____ (乐观)about the future economy in China.