3 sentences

1. 他气得说不出话来了。

   tā qì de shuō bù​chū huà lái le.

   He was so angry he couldn't speak.

   Source: Tatoeba

2. 男孩的父亲说不出话来。

   nán​hái de fù​qīn shuō bù​chū huà lái.

   The boy's father was speechless.

   Source: AI Challenger 2017

3. 她的表演会让你看得说不出话来。

   tā de biǎo​yǎn huì ràng nǐ kàn de shuō bù​chū huà lái.

   Her performance will leave you speechless.

   Source: CCMatrix