题文
I became a teacher 15 years ____. I have been a teacher ____ 1997. I have taught here ___about 15 years .
| A．ago , since , for | B．ago , for , since |
| C．ago , before , for | D．ago , in , after |
I became a teacher 15 years ____. I have been a teacher ____ 1997. I have taught here ___about 15 years .
| A．ago , since , for | B．ago , for , since |
| C．ago , before , for | D．ago , in , after |
试题篮
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