按要求写句子

1. This is my mother.(改为否定句)

    __________ __________ my mother.

2. Is that your brother?(改为复数句)

    __________ __________ our __________?

3. Is he your good friend?(作肯定回答)

    __________, __________ __________.

4. Is this your sister?(作否定回答)

    __________, __________ __________.

5. Thanks for your family photo.(改为同义句)

    Thanks for __________ __________ __________ __________ __________.

The flat is too expensive and too big, _____, I've grown fond of our little rented flat. [ ]

A. As a result

B. However

C. All in all

D. Besides