___ the meeting ,he would have attended.A If he knewB If he hadn't knownC Had he knownD If he didn't know

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___ the meeting ,he would have attended.A If he knewB If he hadn't knownC Had he knownD If he didn't know

___ the meeting ,he would have attended.A If he knewB If he hadn't knownC Had he knownD If he didn't know
___ the meeting ,he would have attended.
A If he knew
B If he hadn't known
C Had he known
D If he didn't know

___ the meeting ,he would have attended.A If he knewB If he hadn't knownC Had he knownD If he didn't know
做过的题目,答案是C
Had he known=If he had known
如果他知道有这个会议,他会参加的.

C 对过去的虚拟

c

a 虚拟语气