With a lack of practice at the 
OPTIONS:
- jitterbug , the dancer couldn't perform the jitterbug but excelled at the ballet.
- ballet , the dancer couldn't perform the jitterbug but excelled at the ballet.
jitterbug , the dancer couldn't perform the jitterbug but excelled at the ballet.

Betty loved to travel while Natalie had never left their hometown. 
OPTIONS:
- Betty even visited the White House in Washington DC.
- Natalie even visited the White House in Washington DC.
Betty even visited the White House in Washington DC.

Michael asked Robert how to draw the perfect hexagon because 
OPTIONS:
- Michael did not remember how to.
- Robert did not remember how to.
Michael did not remember how to.