Mr. Brown’s condition looks very serious and it is doubtful if he will______.

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问题 Mr. Brown’s condition looks very serious and it is doubtful if he will______.

选项 A、pull back
B、pull up
C、pull through
D、pull out

答案C

解析 pull back撤退,把……向后拉;pull up停下,阻止;pull through渡过难关,恢复健康;pull out退出,撤退。
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