Sorry, I shut my phone off.对不起 ，我关机了

shut off:关掉

They shut off the gas before going on holiday.

他们出发度假之前关闭了煤气。

Are you actually defending our enemy right now?你现在是要为我们的敌人辩护吗

right now:立刻；马上；就在此刻

She's out do some shopping right now.

她现在出去买此东西。

maybe "A" wouldn't have a reason to keep on exposing them.A就没有什么戳穿谎言的理由了

keep on doing: 继续进行

You'll soon go to pieces if you keep on working like that.

如果你继续那样工作的话,很快就会垮下来。

by the way.I'm... I'm doing just fine.还有，我，我很好

by the way:顺便说

By the way, I love your hair that way.

顺便说一句，我喜欢你的发式。