沙土花生
1. is2. I wish you have a good time.3.可以。也可以说The boy was looking forward to receiving the letter that his sister wrote to him.
油墩子2016
1)insistedLeo想游泳但是他的朋友坚持要打篮球2)I wish you to have a good time 3)The boy was expecting the letter from his sister
贝贝塔11
insisted 坚持要去打篮球a good timeThe boy was waiting for the letter that his sister wrote him.