+ I ___________(to walk) home yesterday.
- I ______________________(to walk) home yesterday.
? ___________I ________(to walk) home yesterday.
+ Sara __________________(to begin) to jump up from her chair when she saw him.
-Sara _________________________(to begin) to jump up from her chair when she saw him.
? ________Sara _________(to begin) to jump up from her chair when she saw him.
+ They ____________________(to play) tennis in 1990.
- They ________________(to play) tennis in 1990.
?______________they __________(to play) tennis in 1990.