It made the wok easier to do.
The work was mede easier to do.
see sb doing sth被动语态可不可以加to？不可以。
see sb do sth被动语态可以加to
sb be made adj. 某人被变得怎么样
sb be seen to do sth. 某人被看见做过某事
sb be seen doing sth 某人被看见正在做某事
如果做成被语态，应该是：sb. is made
sb. is seen doing
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