Being a teacher, you must observe your behavior, for ________ you say and do has a life-long effect on your students.
In New Zealand,people lives in the houses with their doors ________north.
A big whale was caught ________the coast by two fishermen.
Every student and every teacher ________.
I took mathematics and physics because I think that ________ very important for me to make further research in this field.
Where to get the materials and how to get them ________ at the meeting.