do some后面加什么形式

I usually do some shopping on weekends。

I'm doing some cleaning。

I'm going to do some shopping。

Every night，I retreat to my lonely bedsit，and sit and do some life doing。

每天晚上，我都退隐到我的小房间里面，坐着随便做点什么事。

We should help our mothers do some housework like washing the dishes, doing the laundry and cooking on a daily basis.

我们应该每天都帮妈妈做一些家务，比如洗碗，洗衣和做饭。