It's the second time Mr Smith to China.A come B came C has come D was coming
问题描述:
It's the second time Mr Smith to China.
A come B came C has come D was coming
答
C 这是史密斯先生第二次来中国.
This is+the+序数词+time+that从句,that从句中的谓语常用现在完成时.