UC知道3个动词的适当形式填空....
来源：百度知道 编辑：UC知道 时间：2024/05/13 04:22:04
They are experienced in ____ (plant) trees.
The young man _____ (take) part in some films before he ____ (become) a famous actor.
The classroom should _____ (clean) every day.
The young man _____ (take) part in some films before he ____ (become) a famous actor.
The classroom should _____ (clean) every day.
planting
has taken became
be cleaned
planting
took becomes
be cleaned
planting
has taken became
be cleaned
planting
had took;became(had took是过去完成时，而且它发生在“became”前）
be cleand（教室被打扫，should后加动词原形，又要用被动语态，所以是be cleand）
planting
has taken became
be cleaned