1、 I am often made to do my homework
make sb do sth 变成被动语态时要将省略的to加上.
2、Is a pan used for cooking?
3.is listened carefully
4.By whom is the house made?
(特殊疑问句:用whom代替farmers)
5.Do they write business letters in English?
(一般现在时,主语是they 谓语动词用do来提问)
Rice grows in South china.
(植物的生长是自然规律,统一要用主动语态,而且要用一般现在时态)