The Chinese Characters Dictation Contest﹙汉字听写大赛﹚was very popular. There ____ a similar one in our school next Friday. I can’t wait.

no life has been found outside the earth, but while some scientists are activelysearching for living things in outer space, others firmly believe there ______.

We _____ have proved great adventurers, but we have done the greatest march ever made in the past ten years.

heexamination, which made his parents happy.

____ several times, the young scientist still kept ondoing his experiments.