——May I borrow your car, Jack? ——Sorry, it’s ____ this moment.
They agreed to rent the house ______ the roof should be repaired.
The reason ___he didn’t come was ____he was injured.
Mother shut the window ______ she might keep the insects out.
Mr. Herpin is one of the foreign experts who ___in China.
Anyone can borrow books from this library _______ he keeps them clean and returns them in time.