句型转换。 1. My grandpa listens to the radio every day. (用at this time yesterday改写) My grandpa _____ _____ to the radio at this time yesterday. 2. Let's go and have a look, _____ _____? (改为反意疑问句) 3. I borrowed an MP4 from Kate yesterday. (改为同义句) Kate _____ an MP4 _____ me yesterday. 4. Mr. Wang is very busy. He can't go fishing with my father. (改为同义句) Mr. Wang is _____ busy _____ go fishing with my father. 5. They were climbing the mountain when it began to rain. (就划线部分提问) What _____ they _____ when it began to rain?