must we hand in the xeamination papers now?how did you make the model plane 两句都改成被动语态

问题描述:

must we hand in the xeamination papers now?how did you make the model plane 两句都改成被动语态
must we hand in the xeamination papers now?
how did you make the model plane 两句都改成被动语态,在下午3点以前啊

Must the examination papers be handed in by us now?
How was the model plane made by you?