你觉得自己最缺什么能力？

Nǐ juéde zìjǐ zuì quē shénme nénglì?

What ability do you think you lack the most?

今天开会的人太少，缺了三个人。

Jīntiān kāihuì de rén tài shǎo, quē le sān gè rén.

There are too few people in today's meeting; three people are missing.

这道题我只写了一半，还缺最后一句。

Zhè dào tí wǒ zhǐ xiě le yí bàn, hái quē zuìhòu yí jù.

I only wrote half of this question; the last sentence is still missing.