At the weekend，you may play a computer g ，but you mustn't play for more than 30 minutes．
They want to take a rest after a two﹣hour drive. （改为同义句）
They to take a rest after a two﹣hour drive.
We are going to eat zongzi at home after the exam. （对划线部分提问）
you going to eat zongzi after the exam？
I talked to him on the phone yesterday. （改为否定句）
I to him on the phone yesterday.
Of the three cities，Ningbo，our hometown，is the （生机勃勃的）.
Yuan Longping，the "Father of Hybrid Rice"，won many （奖） for his rice research.