3 sentences

1. 掌握了财政大权，他也就掌握了公司的主动权。

   zhǎng​wò le cái​zhèng dà​quán, tā yě jiù zhǎng​wò le gōng​sī de zhǔ​dòng​quán.

   By controlling the purse strings, he also held the upper hand in the company.

   Source: Dong Chinese Dictionary

2. 由于掌控着核心技术，他们在谈判中占据了主动权。

   yóu​yú zhǎng​kòng zhe hé​xīn jì​shù, tā​men zài tán​pàn zhōng zhàn​jù le zhǔ​dòng​quán.

   By controlling the core technology, they held the upper hand in the negotiations.

   Source: Dong Chinese Dictionary

3. 军队在战斗中争取到了主动权。

   jūn​duì zài zhàn​dòu zhōng zhēng​qǔ dào le zhǔ​dòng​quán.

   The army seized the initiative in the battle.

   Source: Dong Chinese Dictionary