You can eat food free in my restaurant ______you like

Lucy, isn’t the talk boring —_________. You can learn a lot from it.

Are you free after school?-Sorry.I’ve planned to treat a friend of mine to dinner __________ for his help.[ ]

Oh， my god! Our house last night. Look at the footprints on the floor.

The detective, ________ to be reading a newspaper, glanced at the man seated next to a woman. [ ]