The thief walked silently into the house and tripped over the rope after passing the brick because the 
OPTIONS:
- rope was invisible.
- brick was invisible.
rope was invisible.

The seamstress could not fit the material through her machine because the 
OPTIONS:
- material was too small.
- machine was too small.
machine was too small.

The robber tried to hide the money in the envelope but the 
OPTIONS:
- envelope was too large.
- money was too large.
money was too large.