问题描述：
Scientists have discovered that genes may make some people more __________ to anxiety.
If we had known that she had planned to go abroad today, we _____ at the airport.A. would see her offB. would have seen her offC. should see her offD. must have seen her off选哪个?谢谢!
If we had known that she had planned to go abroad today, we _____ at the airport.A. would see her offB. would have seen her offC. should see her offD. must have seen her off
If we had known that she had planned to go abroad today, we _____ at the airport.A. would see her offB. would have seen her offC. should see her offD. must have seen her off选哪个?谢谢!
If we had known that she had planned to go abroad today, we _____ at the airport.A. would see her offB. would have seen her offC. should see her offD. must have seen her off
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