"They ___ only ____ (meet) once,but they are just like old friends

问题描述:

"They ___ only ____ (meet) once,but they are just like old friends

have met
现在完成时

"They _have__ only __met__ (meet) once, but they are just like old friends

have met
They _have_ only _met_ once, but they are just like old friends.
他们只见过一次,但就像是老朋友似的.