_____ workers are there in the factory? —There are 500. [ ]

In order to find ______ better job, she planned to learn ______ second foreign language.

Could you tell me _______ it take to go from here to Harbin by car?—About fifty minutes.

Mr Wang’s never been to Canada , has he?—________. He went there on business last week.

Look! It’s a photo _______ my family. [ ]