昨天我通过朋友了解了这个社团.I_______ ________ the club by my friend.
问题描述：
昨天我通过朋友了解了这个社团.I_______ ________ the club by my friend.
我们昨天在湖边的一个公园野餐了.
We had a picnic ———— ———— ————— by a lake yesterday.
答
I knew about the club by my friend yestoday.
We had a picnic in a park by a lake yesterday.