should he come back to china,we-him to attend the meetingA w

答案选C.此题考查的是虚拟语气倒装的用法.
shoul he come=if he should come 从这里判断这是与将来事实相反的假设,所以主句要用would do来表示虚拟.
当if引导的非真实条件句中含有should,had,were时可以把if省略,把should,had,were提前.
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