根据汉语用only完成句子。

1.  Only after he was taken to the police station____ stealing.

     只有当他被带到警察局后,他才承认偷窃.

2. Only in this way________the help you  need.

   只有用这种方法,你才能得到你所需要的帮助.

3. Only when one loses freedom____ its value.

    只有当一个人失去自由时,他才会懂得自由的价值.

4. Only by taking a taxi________the airport on time.

    只有乘出租车你才能按时到达机场.