根据句意和提示，在空格内写出各单词的正确形式

The ________(首都)of the USA is Washington DC．

用所给动词的正确形式填空

I'm sorry I ________(keep)you waiting for such a long time．

用所给动词的正确形式填空

He with his classmates ________(exercise)every morning．

用所给动词的正确形式填空

My cousin's lovely cat ________(die)two days ago．

用所给动词的正确形式填空

The children ________(enjoy)themselves in the park at the moment．

用所给动词的正确形式填空

There ________(be)a talk show on CCTV-4 at nine this evening, isn't there?

用所给动词的正确形式填空

I often hear her ________(sing)in the next room．

用所给动词的正确形式填空

The small village ________(turn)into a modern town in the past ten years．

用所给动词的正确形式填空

－I called you just now, but you didn't answer．

－Sorry, I ________(discuss)with my sister about homework．

用所给动词的正确形式填空

When I came in, I saw a purse ________(lie)on the floor．