同义句转换。
1. To learn English well is very important.
_____ _____ very important _____ learn English well.
2. Kate began to study Chinese in 2004.
It _____ _____ over two years since she began to study Chinese.
3."Are there homeless people in your city?"
I asked Wang Tao. I asked Wang Tao _____ there _____ homeless people in his city.
4. Millions of people speak English as their second language.
English _____ _____ by millions of people as their second language.
5. He doesn't know where he can find a pen pal.
He doesn't know _____ _____ find a pen pal.
