4.【单选题】马克思主义哲学的直接理论来源是（）。

Her wish is ____ a flight attendant.

It ____ 10 hours ____ from Beijing to Cancouver.

She ____ Paris thirty times.

The flight attendants must be able to keep the passengers calm in ____ emergency.

The captain has flown for 10 years. ____ have I.

Sue Brown is a stewardess and Sam Green is a ____ for their country＇s airline.

Cathie has read ____ French books.

I ____ he will get the job.

I fell ____ after such a hardworking week.

Would you like to ____ anyone to represent your class?