It’s already 10 o’clock. I wonder how it _____ that she was two hours late on such a short trip. [ ]

My grandfather _______ ten years ago.

Are you sure you have to It’s been very late.— I don’t know __________ I can do it if not now.

He’s fed the dog and the cat, _______

I have ____ housework to do, so I feel ____ bored. – You are so lazy.