Look! Sam's uncle___________under a big tree and________a book.
| A．sits, reading |
| B．is sitting, reads |
| C．is sitting, reading |
| D．sits, reads |
Look! Sam's uncle___________under a big tree and________a book.
| A．sits, reading |
| B．is sitting, reads |
| C．is sitting, reading |
| D．sits, reads |
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