Giúp mình với! 1.have/at/a/The/leaves/so/4:30,/still/lot/of/train/time./we

It looks like you're trying to fill in the blanks with correct grammar and word order. Here's a possible completion: "We still have a lot of time, as the train leaves at 4:30." Or, if you'd like to maintain a more conversational tone: "We have a train at 4:30, so we still have a lot of time."