22. ---Chatting online has become_________popular means of communication..
---That’s true. It is especially popular with young.
| A． / ; the | B．a ; the | C．/ ; / | D．a ; / |
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22. ---Chatting online has become_________popular means of communication..
---That’s true. It is especially popular with young.
| A． / ; the | B．a ; the | C．/ ; / | D．a ; / |
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