I didn't finish the test— I ran out of time.
我没答完试卷，我的时间不够了。
I didn't finish writing my test because I ran out of time.
我没有写完我的试卷因为我的时间用完了。
We ran out of time, so I want to resume that.
我们没时间了，因此我想回到正题。
I talked for a long time till I ran out of words.
我讲了很长时间，直到说不出话来。
Last time, we ran out of time, so I want to tell you the rest of this story today.
上次，我们时间不够，所以今天，我想跟你继续谈剩馀的部分。
Last time, we ran out of time; so I want to tell you the rest of this story today.
上次，我们时间不够，没讲完，今天我要讲剩下的部分。
Last time, we ran out of time; so I want to tell you the rest of this story today.
上次，我们时间不够，没讲完，今天我要讲剩下的部分。
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