he made his sister laugh again（改爲被動語態）

題目：

he made his sister laugh again（改爲被動語態）
His sister—— —— —— ——again
we should listen to the teacher carefully in class（改爲被動語態）
The teacher should—— —— ——carefully in class
I found him a good boy（寫出同義句）
I found—— ——a good boy
額外給分···

解答：

1.was made to laugh
2.be listened to
3.he is