She had hardly got back to the kitchen ________ the doorbell rang.
——How about calling on many _____ volunteer to help those trapped in Yushu county? ——I can't think of ________ better idea.
______percentage of the population died in Yushu Earthquake on April 14?
In front of ______ remained of my old house,I took some pictures,which called up my childhood.
It’s on the festival occasions ______ the family get together______ he misses his father.
When I opened the door, I found my father sitting in his chair, completely ______ in a magazine.