我透过窗户看了看，但没有进去。

I looked through the window but I didn't ___go ___in.

1989年之前，只有国王可以进去，但现在每个人都可以进入。

Before 1989, only the king could ___go ___in, but now everyone can enter.

请进去并在大厅等候。

Please ___go ___in and wait in the lobby.