331 May I speak to your boss？

332 Give me someone who can speak English。

333 Is there anyone who can speak English？

334 I would like to talk with someone in charge。

我想请你们负责人讲话。

335 I would like to talk to your chief。

我想请你们主管讲话。

336 Let me talk to Mr. Wang。

我要请王先生讲话。

337 Can I speak to Mr. Li？

我能请李先生讲话吗？

338 When is he expected to be back？

他什么时候回来？

339 Do you know when he will be back？

340 Can you tell me what time Mr. Chen will be back？

你能否告诉我陈先生何时会回来？