They spend the day p_____ with the new toys and visiting their relatives and friends.
问题描述：
They spend the day p_____ with the new toys and visiting their relatives and friends.
答
They spend the day playing_____ with the new toys and visiting their relatives and friends.
这里play with the new toys表示玩玩具
另外是加在spend后面,所以是动词ing形式,同时从后面的visiting也可以看出是ing形式O(∩_∩)O谢谢，那么，I waited__the pavement and saw a policeman standing__the crossing. A.on...atB.at...onC.in...inD.beside...over怎么做？选择A因为在人行道上用on the pavement而在十字路口是at the crossing