MY PARENTS STARTED OFF A ABOUT 5 O'CLOCK IN THE MORNING. TYEY __BY NOW. A:WOULD BE ARRIVING
问题描述：
MY PARENTS STARTED OFF A ABOUT 5 O'CLOCK IN THE MORNING. TYEY __BY NOW. A:WOULD BE ARRIVING
B:SHOULD HAVE ARRIVED C:WOULD HAVE ARRIVED D:SHOULD BE ARRIVING
答
B:SHOULD HAVE ARRIVED 是对的.
根据句意,my parents 是应该到达了.should have done 是对过去事情的比较肯定的推测,“应该.”的意思.