— How is that, Blair?— I wonder ______ it takes to be a good teacher beyond patience and a great knowledge of students.
This also keeps the air,soil,water crops________ chemicals.
____polite to others and you can get friendship in turn.
There are many tall old trees____ in and around our school.
A quarrel _________, which made him ______ his family.
Though he was _______,he looked down upon those who had a lot of money.