Not ________ I stepped into Grade two did I choose to study arts.
Unemployment in USA is likely to remain high in 2011, and _______ for the next few years.
I didn’t make sense of _______poem until I read it _______ third time.
—He failed in the exam again. —He __________his teacher’s advice.
When firstto the market, these products enjoy great success.
It is uncertain ______ side effect the medicine will bring about, although about two thousand patients have taken it.