题干
--- If he ____, he _____ that food.
--- Luckily, he was sent to hospital immediately.
A：was warned; would not eate
B：had been warned; would not have eate
C：would be warned; had not eate
D：would have been warned; had not eate
答案(点此获取答案解析）
B
里，组成下面三个算式。（每个数字只能用一次） 
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