12. He gave us a nod and muttered a “yes”after _______ seemed like hours.

est ________, though unpleasant tothe ear, induces good conducts.

We young people shouldn’t think about the failure in the past. Instead, we should be to face the future.

Masha, a hostess on a Chinese TV program, could not forget those _______moments when she first arrived in China, _______ about Chinese culture.

Was it in 1997______he was still at middle school_______ this boy became an expert at computer?