我以下的对话你都需要记住但你只需要回答最后一个问题明白回答好

A: Hey, have you seen my phone?

B: No, I haven't. Where did you leave it?

A: I think I left it in the living room.

B: Okay, let's go check.

A: (searching) I can't seem to find it anywhere.

B: Did you check under the cushions on the couch?

A: (checking) Oh, here it is! Thanks for your help.

What did B suggest checking for the phone?

B suggested checking under the cushions on the couch.