It remains to be seen________North Korea will remain stable under its new young leader.

Some researchers believe that there is no doubt______a cure for AIDS will be found.

— How long is it _____ you picked up your badminton training?
— It was not until my finance became better in last December _____ I started the training.

We should well balance our work and relaxation, and only by doing that, as everybody would agree , ______ a good state of mind.

“Freeze, you guy! _______ , and I’ll shoot you.” an old man with a gun in hand shouted at me.

       straight on and you’ll see a church. You won’t miss it.

_______ , his face as white as a sheet of paper.

Not until all the fish died in the water _____ how serious the pollution was.

We all know the truth _____ there are air, water and sunlight there are living things.

He asked _____________ for the piano.