---I telephoned him twice and I couldn’t get through to him.
--- The line might have been out of order, ____?
| A．don’t you | B．was it | C．do you | D．hadn’t it |
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---I telephoned him twice and I couldn’t get through to him.
--- The line might have been out of order, ____?
| A．don’t you | B．was it | C．do you | D．hadn’t it |
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