根据所给单词,在空格填入一个正确的形式。 1. We want to know _____ (Canada) hobbies. 2. They might organize a stamp _____ (collect) club. 3. She taught _____ (she) English since she was fourteen. 4. He had fun _____ (trade) stamps. 5. Making model train will be an _____ (enjoy) hobby. |