我们该去公园散步了。

We should ___go to the park for a walk.

我们该走了，否则会错过火车。

We should ___go now, or we'll miss the train.

这台电脑运行不正常，经常卡住。

This computer isn't ___going properly; it keeps freezing.

你可以继续你的演讲了。

You can ___go on with your presentation now.

如果不及时修理，这扇门会生锈。

If not fixed soon, this door will ___go rusty.