根据括号内的要求完成下列句子。

1. Tom has to stay at home on Sunday. (改为否定句)

    Tom _____ _____ to stay at home on Sunday.

2. He can seldom finish his homework by himself, _____ _____? (反意疑问句)

3. The teacher told us it. England is an island. (改为宾语从句) 

    The teacher told us England ______ an island.

4. The Pacific Ocean is the largest ocean in the world. (同义句)

    The Pacific Ocean is larger than ______ _____ ocean in the world.

5. It is a nice sunny day today. (感叹句)

    _______ _______ nice sunny day it is today!

下列有关场内证券交易与结算的说法，错误的是（）。

A.中国结算公司提供登记、存管与结算服务

B.证券交易所实行的是自律管理

C.设立证券登记结算机构须经国务院证券监督管理机构批准

D.我国证券交易所的组织形式为公司制