如果我们不等凯伦了，我们不妨现在就走。

If we're not waiting for Karen, we ___may ___as ___well go now.

毕竟，你不妨知道真相。

After all, you ___may ___as ___well know the truth.

既然公交车晚点了，我们不妨走到车站去。

Since the bus is late, we ___may ___as ___well walk to the station.