Can you think of some cases ________ people can communicate only by means of body language?

下列对联，最适合祝贺老师70岁寿辰的一联是（ 　　）

____ others might have been satisfied, Dawson had higher ambitions.

Scientists say it may be fiveyears ______ it is possible to test this medicine on human patients

He said＿＿＿＿＿his sister had passed the entrance examination of college, and＿＿＿＿＿she would go to college in about 20 days.