A cat, ______ it is a white one ______ a black one, is considered to be a good cat as long as it can catch mice. 

—Dongdong, ____ toy car is that?         —It’s ____.

I like monkeys,       they are smart.

______now people cut down many trees,______a lot of animals are losing their homes.

I like sleeping with the window open ______ it’s too cold.