听下面一段较长对话，回答以下小题。
【小题1】What is the woman going to buy?

A．A few rocks.

B．A small bottle.

C．Some beautiful fish.

【小题2】Where does the conversation most probably take place?

A．At home.

B．In an office.

C．In the market.

【小题3】What does the man advise the woman to do?

A．Keep the fish in a round bottle.

B．Go shopping and buy some fish.

C．Put some underwater plants in the tank.

【小题4】Why does the man suggest putting a few rocks into the tank?

A．To decorate the tank.

B．To keep the water clean.

C．To allow the fish to swim around.