.It is no use ______ after you know your failure.

.. His physical disability makes _____ rather difficult for him to find a good job.  

–There is _______ on using mobile phones at the gas station. --Do you mean talking on the mobile phone ________ at the gas station?

________ to playing games recently，he is easy to feel sleepy in class.

.If you _______wait a moment, I’ll go and find our manager.