The athlete’s years of hard working________when shefinally won the Olympic gold medal.

Shall I have another look at the flat and tell youmore about it–__________ I’ll telephone the salesgirl for detailsmyself later

The schoolmaster hesitated ___ an instnat before he made the decision

It is over _________ from Huaibei to Hefei.

Scientists think that the continents ____ always where they ___today