Question

We no longer keep up the close friendship of few years ago, though we still visit each other_____.

A．in good time	B．up to date
C．on occasion	D．once and for all

Answer 1

C

译文：虽然我们仍不时地拜访对方，但在几年以前，我们之间的关系已经不那么密切了。on occasion有时，不时。A选项：在适当或有利时刻。B选项：现代的。C选项：时而，不时。D选项：只此一次，绝不再重复。