问题补充：
The child was immediately after supper.
A. enough tired to go to bed
B. too tired to go to bed
C. so tired that he went to bed
D. very tired, he went to bed
答案：
A. enough tired to go to bed
B. too tired to go to bed
(答案→)C. so tired that he went to bed
D. very tired, he went to bed
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