We ___ to China 2 years ago. (go) [85]
went
She's tired, ______? [85]
isn't she
They didn't go on the field trip, _____? [85]
did they
___ of my friends have been to the zoo before. (70%) [89]
Most
___ of my friends have never been to the sea. (50%) [89]
Half
___ of my friends have been to a different country. (5%) [89]
Very few
