上午用英文怎么表達(dá)？簡寫

　　Polling has been heavy since 8 a.m.

　　從早上8點(diǎn)以來投票很踴躍。

　　I book a wake-up call for 4:45 a.m.

　　我預(yù)訂了凌晨4點(diǎn)45分的叫醒電話。

　　I rushed to get the 7:00 a.m. train.

　　我急急忙忙去趕早上7點(diǎn)的火車。