They should ask their professors for help.

VOA: special.2009.04.30

If you need help, ask John, myself, or the TAs. That's what we're here for.

如果你需要帮助，请教John，我自己，或者助教们，那是我们存在的理由。

麻省理工公开课 - 计算机科学及编程导论课程节选

He didn't do anything. He called some friends to ask for help in finding them some tents."

VOA: standard.2010.06.01

The general described the effort as "hard work." Several civilian experts General McChrystal invited to help with an assessment of the situation have said they recommended he ask for more U.S.troops.

VOA: standard.2009.08.11