The house ____ Lu xun used to live in is now a museum.

I think it is really ________ to expect a child to solve such a difficult problem.[ ]

___________ have you been away from your hometown, Janet— Since 5 years ago.

The child doesn’t need any help. He is old enough to _________ himself.

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