许多人质疑上帝的存在。

Many people question the ___existence of God.

根据现代宇宙学，宇宙大约在150亿年前开始存在。

According to modern cosmology, the Universe came into ___existence about fifteen billion years ago.

他们创办的戏剧公司今天仍然存在。

The theater company that they started is still in ___existence today.