题目内容：

we have been () by all our friends since we hadn't seen each other for ten years.
A called on
B called at
C called into
D called for
为什么选A?

优质解答

call on 拜访+人 call at 拜访+地 call into 需根据语境进行翻译 call for 需要 公开要求
主语we 被拜访 所以是A