1) He's mixing with the wrong people.
他交友不慎。
2) He is discreet in choosing his friends.
他交友谨慎。
3) He was indiscriminate in his choice of friends
他择友不慎重。
4) making friends with caution
交友要慎
5) Must be careful to make friends with
交友宜慎
6) Watch the company you keeps.
交友要谨慎。
补充资料：交友
1.朋友。 2.结交朋友。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条