1．My classmates are going to skat e in the afternoon. (改为否定句)
My classmates ________ ________ to skate in the afternoon.
2． Mr. Zhao goes fishing every weekend. (改为反意疑问句)
Mr. Zhao goes fishing every weekend, ________ ________?
3．Bruce has art lessons twice a week. (对划线部分提问)
________ ________ does Bruce have art lessons?
4．I spend half an hour doing morning exercises every day. (改为同义句)
It ________ me half an hour to ________ morning exercises every day.
