I called you yesterday evening, but nobody answered the phone. –Oh, I ___ a walk with my parents at that time.

As China grows stronger and stronger, Chinese _____ in more and more schools out of our country.

It’s very nice of you each of us a gift.

Because of Project Hope (希望工程), _______ childrenhave better lives.

mber of farmers with Internet accesshas dramatically increased, _____the way farmers do business.