________ thousands of Chinese students，Chuck has vast experience in the Chinese class.
A．Having taught B．Taught
C．Teaching D．To have taught
We do not have enough money.________，we cannot afford to buy the new car.
A．However B．Anyway C．Therefore D．Though
________ the same mistake again made his parents very angry.
A．His being made B．He had made
C．He had making D．His making
It was only when I reread his poems recently _______ I began to appreciate their beauty.
A. until B.that C.when D. after
The appearance of Yao Ming has ______ the fans of a sure victory for the Huston Rocket in the coming NBA contest.
A．accused B.wanted C．convinced D ．persuaded
—How long will you be staying?
—I don't know.______.
A．That's OK B．Never mind
C．It depends D．It doesn't matter
