--- Hey, what’s up? Water is everywhere. What can I do for you?
--- Oh, great. I ______ how to operate this damn new machine.
| A．just wondered | B．was just wondering |
| C．had just wondered | D．have just wondered |
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--- Hey, what’s up? Water is everywhere. What can I do for you?
--- Oh, great. I ______ how to operate this damn new machine.
| A．just wondered | B．was just wondering |
| C．had just wondered | D．have just wondered |
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