This is ______ book I’ve told you about. It’s written by ______ university teacher.
| A．the；an | B．a；an | C．the；a | D．a；the |
This is ______ book I’ve told you about. It’s written by ______ university teacher.
| A．the；an | B．a；an | C．the；a | D．a；the |
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