By the year 1889, there were just 541 bison in the whole of North America.
It was reported that a little boy under a destroyed house for three days was pulled out alive at last.
The room___ 10 meters across is large enough for a single man to live in.
He is a strict and kind teacher, ______ my son loves and respects.
Helping others is a habit, ___ you can learn even at an early age.
--Our English teacher is back home from Britain now. --Yes, she _____there for just three months.