came in, I saw her sitting in the sofa ______in thought

Mum, I plan to work in a restaurant to get some work experience during the vacation.— I ______ your decision, for it is good for you.

I requested _____ talking. Which of the following is wrong? [ ]

_ __ __, I have to put it away and focus my attention on study this week.

下列各句中，没有语病的一项是