填所缺单词!

填所缺单词!
Do you like animals? Do you want to keep animals? Yes, many people like animals and want to keep a lovely animal as a （（（（1）））） p_____. It's a pity that they don't have a suitable place to keep them. However, keeping fish may be the best choice. Why keep them? People keep dogs and cats because they enjoy their friendship. Fish can not be friendly, but they have beautiful shapes and colors. It's a pleasure to watch as they swim （（（（2））））i_____ their tank（（（（水槽水槽水槽水槽））））. What do they need? First of all, the fish need a suitable （（（（合适的合适的合适的合适的）））） tank, and you must fill the tank （（（（3）））） w_____ suitable water. It is also good for （（（（4）））） t_____ to have a few water plants in the tank to keep the water pure （（（（纯净纯净纯净纯净））））. Putting a few snails （（（（蜗牛蜗牛蜗牛蜗牛）））） in the tank is a good （（（（5）））） i_____. They will keep it （（（（6）））） c_____ What about feeding them? There are many kinds of fish food （（（（7）））） t_____ you can get in the shops. Most are suitable for all kinds of fish. You should feed your fish only （（（（8）））） o_____ a day. It is important not to give them （（（（9）））） t_____ much food. Just give them as much as they can （（（（10）））） e_____ up in about 15 minutes. This will keep them healthy.