______ has already been pointed out, only by correcting mistakes, can you make progress.
| A．It | B．As | C．That | D．What |
________volcanoes now for many years, I am still as enthusiastic about my job as the first day I first______.
| A．Studied, started | B．Have studied, started |
| C．Having studied, started | D．Having studied, starting |
Film has a much shorter history, especially when ______ such art form as music and painting.
| A．having compared to | B．comparing to | C．compare to | D．compared to |
By _____ coincidence, oil paints were developed at the time when ____technique of perspective was used.
A. a ; the B \ ; a C. \; the D. a; a
—Will you join us in the game?
—Thank you,
| A．but why not? | B．but I’d rather not. |
| C．and I won’t | D．and I’ll join. |
--- The kind-hearted lady is popular with her neighbors, right?
--- Yes. She is always ready to help others without expecting anything _______.
| A．in store | B．in return | C．in charge | D．in turn |