2 sentences

1. 他整晚提心吊胆，生怕自己考试不及格。

   tā zhěng wǎn tí​xīn​diào​dǎn, shēng​pà zì​jǐ kǎo​shì bù jí​gé.

   He was on edge all night, for fear that he would fail the exam.

   Source: Dong Chinese Dictionary

2. 一听到敲门声，他就提心吊胆，生怕是债主找上门来。

   yī tīng​dào qiāo​mén​shēng, tā jiù tí​xīn​diào​dǎn, shēng​pà shì zhài​zhǔ zhǎo​shàng​mén lái.

   As soon as he heard the knock on the door, he was on edge, fearing it was a debt collector.

   Source: Dong Chinese Dictionary