Every morning I get up at 6:00 because I have two dogs ______ at the door for me to take them out for the routine walk.
| A．to wait | B．wait | C．waited | D．waiting |
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Every morning I get up at 6:00 because I have two dogs ______ at the door for me to take them out for the routine walk.
| A．to wait | B．wait | C．waited | D．waiting |
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