Please ____ the mistakes in my composition

23. With Shanghai World Expo drawing near, volunteers are making use of every minute to _______ their foreign language because language volunteers must pass a written test and an interview.

Many people，especiallychildren，are encouraged by Jackie Chan to learn kungfuto develop their good________.

Jenny, how was your trip to Beijing? — Oh, I missed it. I wish I _____ my vacation there. [ ]

Whenever possible, Mr Smith how well he speaks Spanish.