He seems too tired today, and I wonder he got a good sleep last night.
| A．when | B．that | C．if | D．where |
相关试题
With new technology, pictures of underwater valleys can be taken color.
| A．by | B．for | C．with | D．in |
The employment rate has continued to rise in big cities thanks to the efforts of the local govenments to increase.
| A．then | B．those | C．it | D．that |
Sit down, Emma. You will only make yourself more tired, on
you feet.
| A．to keep | B．keeping | C．having kept | D．to have kept |
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