Mrs.Smith finds it hard to clear up the mess, as her children are always ________ whenever she tries to.
| A．in the way | B．on watch |
| C．in sight | D．on the line |
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Mrs.Smith finds it hard to clear up the mess, as her children are always ________ whenever she tries to.
| A．in the way | B．on watch |
| C．in sight | D．on the line |
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