Scientists still wonder ______ cloning will help or harm us and _____ it is leading us.
___ is known to all, China is a developing country, belonging to the third world.
She showed her new watch to my wife, ___ was kept in a box.
The reason ______he didn't come was ______he was ill.
We travelled together as far as Chicago, _______ we parted.
Though having discussed it for long, they still haven’t reached an agreementthey should pour more money into the project.