The boy didn't come to ________ life and the method to start his breathing ended up as ________ failure.
Last week, only two people came to look at the house, ________ wanted to buy it.
The other day I bought a vase, _______ was very reasonable.
We went through a period _____ communications were very difficult in the rural areas.
My documents are always ______ out according to the contents (内容) and dates so that I have no trouble in finding them when they ______.
_______ English, the disabled boy could also speak fluent German and French.