Mary dropped in ____ Mr Smith, but he wasn' t at home, so she went to drop in ____ Mr Smith's office.
Our attitude toward our teachers should be _____, but not slavish or superstitious.
It was difficult to guess what her _____ to the news would be.
. _____ the English examination I would have gone to the concert last Sunday.
. Your help is _____ for the success of the project.
When she heard from the hospital that her father had died, she _____ into tears.