– Did you notice John was not at work today?
--- No. If _____working, I would have noticed it.
| A．I’d be | B．I wasn’t | C．I’d been | D．I weren’t |
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– Did you notice John was not at work today?
--- No. If _____working, I would have noticed it.
| A．I’d be | B．I wasn’t | C．I’d been | D．I weren’t |
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