The smoke from the factory made us feel sick. Which of the following is correct for the underlined word

How are your recent trip to Sichuan—I’veneverhad______ onebefore.

Last Sunday,when I got to the station,I I had left my ticket at home.

English is spoken____ a second language in many countries. Many Chinese learn it ____ differentways.

Does Bob like to read books —_________. He likes reading a lot.