问题
选择题
______since he left his hometown.
A．Ten years went by
B．Ten years has passed
C．It is ten years ago
D．There are ten years
答案
答案：B
考查时态。since“自从”，后跟含一般过去时的句子常与现在完成时连用。句意“自从他离开家乡以来，已经过去十年了。”故选B。
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