将下列各句变为宾语从句的复合句.

将下列各句变为宾语从句的复合句.
1.when do the Smiths leave Haikou ?He asks.
He asks ____ ____ ____ ____ Haikou.
2.Where did you find the book ?Could you tell me?
Could you tell me ____ you ____the book ?
3.He can't work out the math problem .I think.
I ____ ____ ____ he ____work out the math problem?
4.The moon goes round the earth .The teacher said to us .
The teacher ____ us ____ the moon ____ round the earth.
5.Which gate do we have to goto ?Do you know ?
Do you know ____ us ____ we have to go to ?
第五个我多打了一个us,很抱歉！

1.when the Smiths leave
如果表示集体名词即表示Smith一家人,那么用复数!
如果表示Smith一家(把Smith家看成一个整体),那么用单数!
这里应该表示一家人,是复数
2.where found
3.don't think that can
4.told that goes
5.知道了which gate