--What are the students doing?
--Some______ books and others ______ at the blackboard.
| A．are looking, are reading |
| B．are reading, are watching |
| C．are watching, are looking |
| D．are reading, are looking |
--What are the students doing?
--Some______ books and others ______ at the blackboard.
| A．are looking, are reading |
| B．are reading, are watching |
| C．are watching, are looking |
| D．are reading, are looking |
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