All his friends and relatives came to __________ him on his daughter's being admitted to Tsinghua University.
We expressed the hope ________ they would come and visit China again.
Everyone at the meeting agreed to the suggestion ________ a new bridge ________ built across the river.
The belief ________ people find it more convenient to stop on Sundays ________ in the research.
Tom came back with a message ________ there would be a test soon.
They have no idea at all ________.