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How come you're not studying?

你為什么不學(xué)習(xí)？

Please give my best regards to your sister.

請(qǐng)向你妹妹轉(zhuǎn)達(dá)我最誠(chéng)摯的問候。

I owe my success to my Mom.

我的成功歸功于母親。

I've been studying all day, and I'm sick and tired of it.

我學(xué)了一天，現(xiàn)在感到厭倦。

I'll get through this work by noon.

我會(huì)在中午以前完成這項(xiàng)工作。

I happened to meet her on the bus.

我湊巧在公共汽車上碰見她。