now, Marin _____in the library for about two hours.

Could you please tell me what happened _____? — OkayI know you are really pressed for time right now[ ]

What do you think of your brother’s son?— He _____ be very naughty but at the same time you _____ help liking him. [ ]

His father______ for ten years.

Her husband was _____ to make a fortune, but finally failed.