It’s quite a time _____ Liu Xiang was injured in the foot, but we are sure it won’t be long _____ he returns to the track.

There was a football match last night. ______ people went to watch it.

He made another wonderful discovery, ______ of great importance to science.

Do you know who is the foreign lady ___________ a light blue dress?[ ]

He is rather difficult to make friends with, but his friendship, _____, is more true than any other.