他们大概能负担得起一个更大的公寓。

They would ___presumably be able to afford a larger apartment.

可能他只是忘了寄信。

___Presumably he just forgot to send the letter.

首先，我建议在8点出发，因为那时可能比10点人少。

First of all, I would recommend departing at 8 o'clock because it will ___presumably be less crowded than at 10 o'clock.