Through the years, Special English has become a very popular tool for teaching English, even though it was not __________ as teaching program.
In English class, our teacher often creates an environment where we are given the __________ to solve problems ourselves.
He __________ to the front of the crowd and wanted to see what was happening.
Tom is good at physics and likes playing basketball. __________ his elder sister.
We may __________ our past experience to develop new technology.
His health is in bad condition, and __________ he is able to work no longer.