题文
It's only six o'clock now；little Tom should be up，though，because he________for nine hours.
| A．has been sleeping |
| B．had been sleeping |
| C．has slept |
| D．had slept |
推荐试卷
It's only six o'clock now；little Tom should be up，though，because he________for nine hours.
| A．has been sleeping |
| B．had been sleeping |
| C．has slept |
| D．had slept |
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