【正文】
10. Look at the man in the _____(公園 )。 ( ) 1. __________are you doing? A. Who B. Where C. What ( ) 2. They______jumping. A. are B. IS C. am ( ) 3. He is _____a letter. B. writing C. writein ( ) 4. Let39。m fine, Thank you . ( )3. Where is it ? c. It39。 1. What are _____ doing? I _____ listening to music. 2. What is ______ doing ? He _____ writing a letter. 3. What are ______ doing ? They _____ playing football. 4. What ____ she doing? _